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Finding the Fourth Proportional to 2,891.56, 4,342.20 and 2,868.88

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Solution

The fourth proportional to 2,891.56, 4,342.20 and 2,868.88 is: 4,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.56 : 4,342.20 = 2,868.88 : x
  2. Step 2: Convert to fraction form
    2,891.56/4,342.20 = 2,868.88/x
  3. Step 3: Cross multiply
    2,891.56x = 4,342.20 × 2,868.88
  4. Step 4: Simplify right side
    2,891.56x = 12,457,250.74
  5. Step 5: Solve for x
    x = 12,457,250.74/2,891.56
  6. Step 6: Final answer
    x = 4,308.14

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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.