Home / 7,787.85-11,680.56-2,854.95

Finding the Fourth Proportional to 7,787.85, 11,680.56 and 2,854.95

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Solution

The fourth proportional to 7,787.85, 11,680.56 and 2,854.95 is: 4,281.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.85 : 11,680.56 = 2,854.95 : x
  2. Step 2: Convert to fraction form
    7,787.85/11,680.56 = 2,854.95/x
  3. Step 3: Cross multiply
    7,787.85x = 11,680.56 × 2,854.95
  4. Step 4: Simplify right side
    7,787.85x = 33,347,414.77
  5. Step 5: Solve for x
    x = 33,347,414.77/7,787.85
  6. Step 6: Final answer
    x = 4,281.98

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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.