Home / 6,972.20-9,622.02-3,988.16

Finding the Fourth Proportional to 6,972.20, 9,622.02 and 3,988.16

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Solution

The fourth proportional to 6,972.20, 9,622.02 and 3,988.16 is: 5,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,972.20 : 9,622.02 = 3,988.16 : x
  2. Step 2: Convert to fraction form
    6,972.20/9,622.02 = 3,988.16/x
  3. Step 3: Cross multiply
    6,972.20x = 9,622.02 × 3,988.16
  4. Step 4: Simplify right side
    6,972.20x = 38,374,155.28
  5. Step 5: Solve for x
    x = 38,374,155.28/6,972.20
  6. Step 6: Final answer
    x = 5,503.88

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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.