Home / 6,215.40-8,577.68-3,420.88

Finding the Fourth Proportional to 6,215.40, 8,577.68 and 3,420.88

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Solution

The fourth proportional to 6,215.40, 8,577.68 and 3,420.88 is: 4,721.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.40 : 8,577.68 = 3,420.88 : x
  2. Step 2: Convert to fraction form
    6,215.40/8,577.68 = 3,420.88/x
  3. Step 3: Cross multiply
    6,215.40x = 8,577.68 × 3,420.88
  4. Step 4: Simplify right side
    6,215.40x = 29,343,213.96
  5. Step 5: Solve for x
    x = 29,343,213.96/6,215.40
  6. Step 6: Final answer
    x = 4,721.05

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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.