Home / 3,187.32-4,799.71-2,781.30

Finding the Fourth Proportional to 3,187.32, 4,799.71 and 2,781.30

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Solution

The fourth proportional to 3,187.32, 4,799.71 and 2,781.30 is: 4,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.32 : 4,799.71 = 2,781.30 : x
  2. Step 2: Convert to fraction form
    3,187.32/4,799.71 = 2,781.30/x
  3. Step 3: Cross multiply
    3,187.32x = 4,799.71 × 2,781.30
  4. Step 4: Simplify right side
    3,187.32x = 13,349,419.52
  5. Step 5: Solve for x
    x = 13,349,419.52/3,187.32
  6. Step 6: Final answer
    x = 4,188.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.