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Finding the Fourth Proportional to 8,726.67, 12,042.45 and 4,747.78

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Solution

The fourth proportional to 8,726.67, 12,042.45 and 4,747.78 is: 6,551.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.67 : 12,042.45 = 4,747.78 : x
  2. Step 2: Convert to fraction form
    8,726.67/12,042.45 = 4,747.78/x
  3. Step 3: Cross multiply
    8,726.67x = 12,042.45 × 4,747.78
  4. Step 4: Simplify right side
    8,726.67x = 57,174,903.26
  5. Step 5: Solve for x
    x = 57,174,903.26/8,726.67
  6. Step 6: Final answer
    x = 6,551.74

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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.