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Finding the Fourth Proportional to 3,648.87, 5,470.05 and 1,339.83

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Solution

The fourth proportional to 3,648.87, 5,470.05 and 1,339.83 is: 2,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,648.87 : 5,470.05 = 1,339.83 : x
  2. Step 2: Convert to fraction form
    3,648.87/5,470.05 = 1,339.83/x
  3. Step 3: Cross multiply
    3,648.87x = 5,470.05 × 1,339.83
  4. Step 4: Simplify right side
    3,648.87x = 7,328,937.09
  5. Step 5: Solve for x
    x = 7,328,937.09/3,648.87
  6. Step 6: Final answer
    x = 2,008.55

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1.5x scale

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.