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Finding the Fourth Proportional to 9,042, 13,565.20 and 2,886

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Solution

The fourth proportional to 9,042, 13,565.20 and 2,886 is: 4,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042 : 13,565.20 = 2,886 : x
  2. Step 2: Convert to fraction form
    9,042/13,565.20 = 2,886/x
  3. Step 3: Cross multiply
    9,042x = 13,565.20 × 2,886
  4. Step 4: Simplify right side
    9,042x = 39,149,167.20
  5. Step 5: Solve for x
    x = 39,149,167.20/9,042
  6. Step 6: Final answer
    x = 4,329.70

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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.