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Finding the Fourth Proportional to 2,591.84, 3,578.70 and 1,708.88

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Solution

The fourth proportional to 2,591.84, 3,578.70 and 1,708.88 is: 2,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.84 : 3,578.70 = 1,708.88 : x
  2. Step 2: Convert to fraction form
    2,591.84/3,578.70 = 1,708.88/x
  3. Step 3: Cross multiply
    2,591.84x = 3,578.70 × 1,708.88
  4. Step 4: Simplify right side
    2,591.84x = 6,115,568.86
  5. Step 5: Solve for x
    x = 6,115,568.86/2,591.84
  6. Step 6: Final answer
    x = 2,359.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.