Home / 1,382.15-2,072.61-560.13

Finding the Fourth Proportional to 1,382.15, 2,072.61 and 560.13

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Solution

The fourth proportional to 1,382.15, 2,072.61 and 560.13 is: 839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.15 : 2,072.61 = 560.13 : x
  2. Step 2: Convert to fraction form
    1,382.15/2,072.61 = 560.13/x
  3. Step 3: Cross multiply
    1,382.15x = 2,072.61 × 560.13
  4. Step 4: Simplify right side
    1,382.15x = 1,160,931.04
  5. Step 5: Solve for x
    x = 1,160,931.04/1,382.15
  6. Step 6: Final answer
    x = 839.95

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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.