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Finding the Fourth Proportional to 1,591.87, 2,387.71 and 946.71

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Solution

The fourth proportional to 1,591.87, 2,387.71 and 946.71 is: 1,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.87 : 2,387.71 = 946.71 : x
  2. Step 2: Convert to fraction form
    1,591.87/2,387.71 = 946.71/x
  3. Step 3: Cross multiply
    1,591.87x = 2,387.71 × 946.71
  4. Step 4: Simplify right side
    1,591.87x = 2,260,468.93
  5. Step 5: Solve for x
    x = 2,260,468.93/1,591.87
  6. Step 6: Final answer
    x = 1,420.01

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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.