Home / 1,377.40-2,061.30-1,127.71

Finding the Fourth Proportional to 1,377.40, 2,061.30 and 1,127.71

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Solution

The fourth proportional to 1,377.40, 2,061.30 and 1,127.71 is: 1,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.40 : 2,061.30 = 1,127.71 : x
  2. Step 2: Convert to fraction form
    1,377.40/2,061.30 = 1,127.71/x
  3. Step 3: Cross multiply
    1,377.40x = 2,061.30 × 1,127.71
  4. Step 4: Simplify right side
    1,377.40x = 2,324,548.62
  5. Step 5: Solve for x
    x = 2,324,548.62/1,377.40
  6. Step 6: Final answer
    x = 1,687.64

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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.