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Finding the Fourth Proportional to 2,126.71, 3,190.02 and 587.71

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Solution

The fourth proportional to 2,126.71, 3,190.02 and 587.71 is: 881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.71 : 3,190.02 = 587.71 : x
  2. Step 2: Convert to fraction form
    2,126.71/3,190.02 = 587.71/x
  3. Step 3: Cross multiply
    2,126.71x = 3,190.02 × 587.71
  4. Step 4: Simplify right side
    2,126.71x = 1,874,806.65
  5. Step 5: Solve for x
    x = 1,874,806.65/2,126.71
  6. Step 6: Final answer
    x = 881.55

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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.