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Finding the Fourth Proportional to 3,382.71, 5,073.38 and 917.70

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Solution

The fourth proportional to 3,382.71, 5,073.38 and 917.70 is: 1,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.71 : 5,073.38 = 917.70 : x
  2. Step 2: Convert to fraction form
    3,382.71/5,073.38 = 917.70/x
  3. Step 3: Cross multiply
    3,382.71x = 5,073.38 × 917.70
  4. Step 4: Simplify right side
    3,382.71x = 4,655,868.62
  5. Step 5: Solve for x
    x = 4,655,868.62/3,382.71
  6. Step 6: Final answer
    x = 1,376.37

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1.5x scale

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.