Home / 1,102.16-1,651.58-615.36

Finding the Fourth Proportional to 1,102.16, 1,651.58 and 615.36

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Solution

The fourth proportional to 1,102.16, 1,651.58 and 615.36 is: 922.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.16 : 1,651.58 = 615.36 : x
  2. Step 2: Convert to fraction form
    1,102.16/1,651.58 = 615.36/x
  3. Step 3: Cross multiply
    1,102.16x = 1,651.58 × 615.36
  4. Step 4: Simplify right side
    1,102.16x = 1,016,316.27
  5. Step 5: Solve for x
    x = 1,016,316.27/1,102.16
  6. Step 6: Final answer
    x = 922.11

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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.