Home / 7,815.54-11,714.78-2,881.02

Finding the Fourth Proportional to 7,815.54, 11,714.78 and 2,881.02

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Solution

The fourth proportional to 7,815.54, 11,714.78 and 2,881.02 is: 4,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.54 : 11,714.78 = 2,881.02 : x
  2. Step 2: Convert to fraction form
    7,815.54/11,714.78 = 2,881.02/x
  3. Step 3: Cross multiply
    7,815.54x = 11,714.78 × 2,881.02
  4. Step 4: Simplify right side
    7,815.54x = 33,750,515.48
  5. Step 5: Solve for x
    x = 33,750,515.48/7,815.54
  6. Step 6: Final answer
    x = 4,318.39

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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.