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Finding the Fourth Proportional to 7,127.76, 10,691.67 and 2,965.17

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Solution

The fourth proportional to 7,127.76, 10,691.67 and 2,965.17 is: 4,447.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.76 : 10,691.67 = 2,965.17 : x
  2. Step 2: Convert to fraction form
    7,127.76/10,691.67 = 2,965.17/x
  3. Step 3: Cross multiply
    7,127.76x = 10,691.67 × 2,965.17
  4. Step 4: Simplify right side
    7,127.76x = 31,702,619.13
  5. Step 5: Solve for x
    x = 31,702,619.13/7,127.76
  6. Step 6: Final answer
    x = 4,447.77

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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.