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Finding the Fourth Proportional to 3,340.88, 5,011.38 and 875.91

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Solution

The fourth proportional to 3,340.88, 5,011.38 and 875.91 is: 1,313.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.88 : 5,011.38 = 875.91 : x
  2. Step 2: Convert to fraction form
    3,340.88/5,011.38 = 875.91/x
  3. Step 3: Cross multiply
    3,340.88x = 5,011.38 × 875.91
  4. Step 4: Simplify right side
    3,340.88x = 4,389,517.86
  5. Step 5: Solve for x
    x = 4,389,517.86/3,340.88
  6. Step 6: Final answer
    x = 1,313.88

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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.