Home / 1,450.38-2,001.52-787.23

Finding the Fourth Proportional to 1,450.38, 2,001.52 and 787.23

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Solution

The fourth proportional to 1,450.38, 2,001.52 and 787.23 is: 1,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.38 : 2,001.52 = 787.23 : x
  2. Step 2: Convert to fraction form
    1,450.38/2,001.52 = 787.23/x
  3. Step 3: Cross multiply
    1,450.38x = 2,001.52 × 787.23
  4. Step 4: Simplify right side
    1,450.38x = 1,575,658.42
  5. Step 5: Solve for x
    x = 1,575,658.42/1,450.38
  6. Step 6: Final answer
    x = 1,086.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.