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Finding the Fourth Proportional to 3,399.76, 5,117.56 and 2,898.64

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Solution

The fourth proportional to 3,399.76, 5,117.56 and 2,898.64 is: 4,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.76 : 5,117.56 = 2,898.64 : x
  2. Step 2: Convert to fraction form
    3,399.76/5,117.56 = 2,898.64/x
  3. Step 3: Cross multiply
    3,399.76x = 5,117.56 × 2,898.64
  4. Step 4: Simplify right side
    3,399.76x = 14,833,964.12
  5. Step 5: Solve for x
    x = 14,833,964.12/3,399.76
  6. Step 6: Final answer
    x = 4,363.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.