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Finding the Fourth Proportional to 6,572.40, 9,070.02 and 3,920.04

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Solution

The fourth proportional to 6,572.40, 9,070.02 and 3,920.04 is: 5,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,572.40 : 9,070.02 = 3,920.04 : x
  2. Step 2: Convert to fraction form
    6,572.40/9,070.02 = 3,920.04/x
  3. Step 3: Cross multiply
    6,572.40x = 9,070.02 × 3,920.04
  4. Step 4: Simplify right side
    6,572.40x = 35,554,841.20
  5. Step 5: Solve for x
    x = 35,554,841.20/6,572.40
  6. Step 6: Final answer
    x = 5,409.72

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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.