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Finding the Fourth Proportional to 3,470.68, 5,205.96 and 1,005.40

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Solution

The fourth proportional to 3,470.68, 5,205.96 and 1,005.40 is: 1,508.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.68 : 5,205.96 = 1,005.40 : x
  2. Step 2: Convert to fraction form
    3,470.68/5,205.96 = 1,005.40/x
  3. Step 3: Cross multiply
    3,470.68x = 5,205.96 × 1,005.40
  4. Step 4: Simplify right side
    3,470.68x = 5,234,072.18
  5. Step 5: Solve for x
    x = 5,234,072.18/3,470.68
  6. Step 6: Final answer
    x = 1,508.08

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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.