Home / 7,881.50-10,872.65-5,046.60

Finding the Fourth Proportional to 7,881.50, 10,872.65 and 5,046.60

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Solution

The fourth proportional to 7,881.50, 10,872.65 and 5,046.60 is: 6,961.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.50 : 10,872.65 = 5,046.60 : x
  2. Step 2: Convert to fraction form
    7,881.50/10,872.65 = 5,046.60/x
  3. Step 3: Cross multiply
    7,881.50x = 10,872.65 × 5,046.60
  4. Step 4: Simplify right side
    7,881.50x = 54,869,890.26
  5. Step 5: Solve for x
    x = 54,869,890.26/7,881.50
  6. Step 6: Final answer
    x = 6,961.86

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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.