Home / 2,487.40-3,727.86-1,256.20

Finding the Fourth Proportional to 2,487.40, 3,727.86 and 1,256.20

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Solution

The fourth proportional to 2,487.40, 3,727.86 and 1,256.20 is: 1,882.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.40 : 3,727.86 = 1,256.20 : x
  2. Step 2: Convert to fraction form
    2,487.40/3,727.86 = 1,256.20/x
  3. Step 3: Cross multiply
    2,487.40x = 3,727.86 × 1,256.20
  4. Step 4: Simplify right side
    2,487.40x = 4,682,937.73
  5. Step 5: Solve for x
    x = 4,682,937.73/2,487.40
  6. Step 6: Final answer
    x = 1,882.66

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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.