Home / 1,116.24-1,540.34-618.88

Finding the Fourth Proportional to 1,116.24, 1,540.34 and 618.88

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Solution

The fourth proportional to 1,116.24, 1,540.34 and 618.88 is: 854.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.24 : 1,540.34 = 618.88 : x
  2. Step 2: Convert to fraction form
    1,116.24/1,540.34 = 618.88/x
  3. Step 3: Cross multiply
    1,116.24x = 1,540.34 × 618.88
  4. Step 4: Simplify right side
    1,116.24x = 953,285.62
  5. Step 5: Solve for x
    x = 953,285.62/1,116.24
  6. Step 6: Final answer
    x = 854.01

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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.