Home / 3,187.28-4,781.06-1,431.99

Finding the Fourth Proportional to 3,187.28, 4,781.06 and 1,431.99

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Solution

The fourth proportional to 3,187.28, 4,781.06 and 1,431.99 is: 2,148.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.28 : 4,781.06 = 1,431.99 : x
  2. Step 2: Convert to fraction form
    3,187.28/4,781.06 = 1,431.99/x
  3. Step 3: Cross multiply
    3,187.28x = 4,781.06 × 1,431.99
  4. Step 4: Simplify right side
    3,187.28x = 6,846,422.95
  5. Step 5: Solve for x
    x = 6,846,422.95/3,187.28
  6. Step 6: Final answer
    x = 2,148.05

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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.