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Finding the Fourth Proportional to 7,127.61, 10,691.42 and 1,933.49

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Solution

The fourth proportional to 7,127.61, 10,691.42 and 1,933.49 is: 2,900.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.61 : 10,691.42 = 1,933.49 : x
  2. Step 2: Convert to fraction form
    7,127.61/10,691.42 = 1,933.49/x
  3. Step 3: Cross multiply
    7,127.61x = 10,691.42 × 1,933.49
  4. Step 4: Simplify right side
    7,127.61x = 20,671,700.20
  5. Step 5: Solve for x
    x = 20,671,700.20/7,127.61
  6. Step 6: Final answer
    x = 2,900.23

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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.