Home / 6,416.20-9,616.20-3,122.20

Finding the Fourth Proportional to 6,416.20, 9,616.20 and 3,122.20

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Solution

The fourth proportional to 6,416.20, 9,616.20 and 3,122.20 is: 4,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,416.20 : 9,616.20 = 3,122.20 : x
  2. Step 2: Convert to fraction form
    6,416.20/9,616.20 = 3,122.20/x
  3. Step 3: Cross multiply
    6,416.20x = 9,616.20 × 3,122.20
  4. Step 4: Simplify right side
    6,416.20x = 30,023,699.64
  5. Step 5: Solve for x
    x = 30,023,699.64/6,416.20
  6. Step 6: Final answer
    x = 4,679.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.