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Finding the Fourth Proportional to 3,387.79, 5,068 and 2,930.65

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Solution

The fourth proportional to 3,387.79, 5,068 and 2,930.65 is: 4,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.79 : 5,068 = 2,930.65 : x
  2. Step 2: Convert to fraction form
    3,387.79/5,068 = 2,930.65/x
  3. Step 3: Cross multiply
    3,387.79x = 5,068 × 2,930.65
  4. Step 4: Simplify right side
    3,387.79x = 14,852,534.20
  5. Step 5: Solve for x
    x = 14,852,534.20/3,387.79
  6. Step 6: Final answer
    x = 4,384.14

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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.