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Finding the Fourth Proportional to 3,655.80, 5,454.99 and 3,432.65

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Solution

The fourth proportional to 3,655.80, 5,454.99 and 3,432.65 is: 5,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.80 : 5,454.99 = 3,432.65 : x
  2. Step 2: Convert to fraction form
    3,655.80/5,454.99 = 3,432.65/x
  3. Step 3: Cross multiply
    3,655.80x = 5,454.99 × 3,432.65
  4. Step 4: Simplify right side
    3,655.80x = 18,725,044.15
  5. Step 5: Solve for x
    x = 18,725,044.15/3,655.80
  6. Step 6: Final answer
    x = 5,122.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.