Home / 1,354.38-2,031.54-623.85

Finding the Fourth Proportional to 1,354.38, 2,031.54 and 623.85

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Solution

The fourth proportional to 1,354.38, 2,031.54 and 623.85 is: 935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.38 : 2,031.54 = 623.85 : x
  2. Step 2: Convert to fraction form
    1,354.38/2,031.54 = 623.85/x
  3. Step 3: Cross multiply
    1,354.38x = 2,031.54 × 623.85
  4. Step 4: Simplify right side
    1,354.38x = 1,267,376.23
  5. Step 5: Solve for x
    x = 1,267,376.23/1,354.38
  6. Step 6: Final answer
    x = 935.76

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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.