Home / 6,215.28-8,577.24-3,420.76

Finding the Fourth Proportional to 6,215.28, 8,577.24 and 3,420.76

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Solution

The fourth proportional to 6,215.28, 8,577.24 and 3,420.76 is: 4,720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.28 : 8,577.24 = 3,420.76 : x
  2. Step 2: Convert to fraction form
    6,215.28/8,577.24 = 3,420.76/x
  3. Step 3: Cross multiply
    6,215.28x = 8,577.24 × 3,420.76
  4. Step 4: Simplify right side
    6,215.28x = 29,340,679.50
  5. Step 5: Solve for x
    x = 29,340,679.50/6,215.28
  6. Step 6: Final answer
    x = 4,720.73

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Find fourth proportional to 3,107.64, 4,288.62 and 1,710.38
Half scale
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Double scale
Find fourth proportional to 6,216.28, 8,578.62 and 3,421.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.