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Finding the Fourth Proportional to 8,045.78, 12,013.63 and 7,207.43

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Solution

The fourth proportional to 8,045.78, 12,013.63 and 7,207.43 is: 10,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.78 : 12,013.63 = 7,207.43 : x
  2. Step 2: Convert to fraction form
    8,045.78/12,013.63 = 7,207.43/x
  3. Step 3: Cross multiply
    8,045.78x = 12,013.63 × 7,207.43
  4. Step 4: Simplify right side
    8,045.78x = 86,587,397.27
  5. Step 5: Solve for x
    x = 86,587,397.27/8,045.78
  6. Step 6: Final answer
    x = 10,761.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.