Home / 1,082.02-1,623.91-613.79

Finding the Fourth Proportional to 1,082.02, 1,623.91 and 613.79

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Solution

The fourth proportional to 1,082.02, 1,623.91 and 613.79 is: 921.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.02 : 1,623.91 = 613.79 : x
  2. Step 2: Convert to fraction form
    1,082.02/1,623.91 = 613.79/x
  3. Step 3: Cross multiply
    1,082.02x = 1,623.91 × 613.79
  4. Step 4: Simplify right side
    1,082.02x = 996,740.45
  5. Step 5: Solve for x
    x = 996,740.45/1,082.02
  6. Step 6: Final answer
    x = 921.18

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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.