Home / 1,439.27-2,157.09-616.57

Finding the Fourth Proportional to 1,439.27, 2,157.09 and 616.57

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Solution

The fourth proportional to 1,439.27, 2,157.09 and 616.57 is: 924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.27 : 2,157.09 = 616.57 : x
  2. Step 2: Convert to fraction form
    1,439.27/2,157.09 = 616.57/x
  3. Step 3: Cross multiply
    1,439.27x = 2,157.09 × 616.57
  4. Step 4: Simplify right side
    1,439.27x = 1,329,996.98
  5. Step 5: Solve for x
    x = 1,329,996.98/1,439.27
  6. Step 6: Final answer
    x = 924.08

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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.