Home / 1,253.68-1,726.11-1,104.20

Finding the Fourth Proportional to 1,253.68, 1,726.11 and 1,104.20

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Solution

The fourth proportional to 1,253.68, 1,726.11 and 1,104.20 is: 1,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.68 : 1,726.11 = 1,104.20 : x
  2. Step 2: Convert to fraction form
    1,253.68/1,726.11 = 1,104.20/x
  3. Step 3: Cross multiply
    1,253.68x = 1,726.11 × 1,104.20
  4. Step 4: Simplify right side
    1,253.68x = 1,905,962.03
  5. Step 5: Solve for x
    x = 1,905,962.03/1,253.68
  6. Step 6: Final answer
    x = 1,520.30

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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.