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Finding the Fourth Proportional to 7,037.05, 9,721.04 and 6,781.30

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Solution

The fourth proportional to 7,037.05, 9,721.04 and 6,781.30 is: 9,367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,037.05 : 9,721.04 = 6,781.30 : x
  2. Step 2: Convert to fraction form
    7,037.05/9,721.04 = 6,781.30/x
  3. Step 3: Cross multiply
    7,037.05x = 9,721.04 × 6,781.30
  4. Step 4: Simplify right side
    7,037.05x = 65,921,288.55
  5. Step 5: Solve for x
    x = 65,921,288.55/7,037.05
  6. Step 6: Final answer
    x = 9,367.74

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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.