Home / 1,158.20-1,598.25-634.13

Finding the Fourth Proportional to 1,158.20, 1,598.25 and 634.13

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Solution

The fourth proportional to 1,158.20, 1,598.25 and 634.13 is: 875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.20 : 1,598.25 = 634.13 : x
  2. Step 2: Convert to fraction form
    1,158.20/1,598.25 = 634.13/x
  3. Step 3: Cross multiply
    1,158.20x = 1,598.25 × 634.13
  4. Step 4: Simplify right side
    1,158.20x = 1,013,487.11
  5. Step 5: Solve for x
    x = 1,013,487.11/1,158.20
  6. Step 6: Final answer
    x = 875.06

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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.