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Finding the Fourth Proportional to 7,159.56, 9,880.66 and 4,015.96

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Solution

The fourth proportional to 7,159.56, 9,880.66 and 4,015.96 is: 5,542.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.56 : 9,880.66 = 4,015.96 : x
  2. Step 2: Convert to fraction form
    7,159.56/9,880.66 = 4,015.96/x
  3. Step 3: Cross multiply
    7,159.56x = 9,880.66 × 4,015.96
  4. Step 4: Simplify right side
    7,159.56x = 39,680,335.33
  5. Step 5: Solve for x
    x = 39,680,335.33/7,159.56
  6. Step 6: Final answer
    x = 5,542.29

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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.