Home / 1,460.25-2,188.84-638.30

Finding the Fourth Proportional to 1,460.25, 2,188.84 and 638.30

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Solution

The fourth proportional to 1,460.25, 2,188.84 and 638.30 is: 956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.25 : 2,188.84 = 638.30 : x
  2. Step 2: Convert to fraction form
    1,460.25/2,188.84 = 638.30/x
  3. Step 3: Cross multiply
    1,460.25x = 2,188.84 × 638.30
  4. Step 4: Simplify right side
    1,460.25x = 1,397,136.57
  5. Step 5: Solve for x
    x = 1,397,136.57/1,460.25
  6. Step 6: Final answer
    x = 956.78

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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.