Home / 8,541.38-12,812.73-3,278.91

Finding the Fourth Proportional to 8,541.38, 12,812.73 and 3,278.91

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Solution

The fourth proportional to 8,541.38, 12,812.73 and 3,278.91 is: 4,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.38 : 12,812.73 = 3,278.91 : x
  2. Step 2: Convert to fraction form
    8,541.38/12,812.73 = 3,278.91/x
  3. Step 3: Cross multiply
    8,541.38x = 12,812.73 × 3,278.91
  4. Step 4: Simplify right side
    8,541.38x = 42,011,788.52
  5. Step 5: Solve for x
    x = 42,011,788.52/8,541.38
  6. Step 6: Final answer
    x = 4,918.62

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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.