Home / 1,425.28-2,139.14-1,015.42

Finding the Fourth Proportional to 1,425.28, 2,139.14 and 1,015.42

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Solution

The fourth proportional to 1,425.28, 2,139.14 and 1,015.42 is: 1,524.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.28 : 2,139.14 = 1,015.42 : x
  2. Step 2: Convert to fraction form
    1,425.28/2,139.14 = 1,015.42/x
  3. Step 3: Cross multiply
    1,425.28x = 2,139.14 × 1,015.42
  4. Step 4: Simplify right side
    1,425.28x = 2,172,125.54
  5. Step 5: Solve for x
    x = 2,172,125.54/1,425.28
  6. Step 6: Final answer
    x = 1,524.00

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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.