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Finding the Fourth Proportional to 8,547.38, 12,819.44 and 3,620.47

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Solution

The fourth proportional to 8,547.38, 12,819.44 and 3,620.47 is: 5,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.38 : 12,819.44 = 3,620.47 : x
  2. Step 2: Convert to fraction form
    8,547.38/12,819.44 = 3,620.47/x
  3. Step 3: Cross multiply
    8,547.38x = 12,819.44 × 3,620.47
  4. Step 4: Simplify right side
    8,547.38x = 46,412,397.94
  5. Step 5: Solve for x
    x = 46,412,397.94/8,547.38
  6. Step 6: Final answer
    x = 5,430.01

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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.