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Finding the Fourth Proportional to 8,731.11, 12,053.58 and 7,010.91

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Solution

The fourth proportional to 8,731.11, 12,053.58 and 7,010.91 is: 9,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.11 : 12,053.58 = 7,010.91 : x
  2. Step 2: Convert to fraction form
    8,731.11/12,053.58 = 7,010.91/x
  3. Step 3: Cross multiply
    8,731.11x = 12,053.58 × 7,010.91
  4. Step 4: Simplify right side
    8,731.11x = 84,506,564.56
  5. Step 5: Solve for x
    x = 84,506,564.56/8,731.11
  6. Step 6: Final answer
    x = 9,678.79

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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.