Home / 1,625.26-2,438.20-638.04

Finding the Fourth Proportional to 1,625.26, 2,438.20 and 638.04

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Solution

The fourth proportional to 1,625.26, 2,438.20 and 638.04 is: 957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.26 : 2,438.20 = 638.04 : x
  2. Step 2: Convert to fraction form
    1,625.26/2,438.20 = 638.04/x
  3. Step 3: Cross multiply
    1,625.26x = 2,438.20 × 638.04
  4. Step 4: Simplify right side
    1,625.26x = 1,555,669.13
  5. Step 5: Solve for x
    x = 1,555,669.13/1,625.26
  6. Step 6: Final answer
    x = 957.18

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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.