Home / 3,652.90-5,479.35-1,187.80

Finding the Fourth Proportional to 3,652.90, 5,479.35 and 1,187.80

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Solution

The fourth proportional to 3,652.90, 5,479.35 and 1,187.80 is: 1,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.90 : 5,479.35 = 1,187.80 : x
  2. Step 2: Convert to fraction form
    3,652.90/5,479.35 = 1,187.80/x
  3. Step 3: Cross multiply
    3,652.90x = 5,479.35 × 1,187.80
  4. Step 4: Simplify right side
    3,652.90x = 6,508,371.93
  5. Step 5: Solve for x
    x = 6,508,371.93/3,652.90
  6. Step 6: Final answer
    x = 1,781.70

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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.