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Finding the Fourth Proportional to 3,652.93, 5,479.70 and 1,187.70

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Solution

The fourth proportional to 3,652.93, 5,479.70 and 1,187.70 is: 1,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.93 : 5,479.70 = 1,187.70 : x
  2. Step 2: Convert to fraction form
    3,652.93/5,479.70 = 1,187.70/x
  3. Step 3: Cross multiply
    3,652.93x = 5,479.70 × 1,187.70
  4. Step 4: Simplify right side
    3,652.93x = 6,508,239.69
  5. Step 5: Solve for x
    x = 6,508,239.69/3,652.93
  6. Step 6: Final answer
    x = 1,781.65

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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.