Home / 4,787.60-7,180.82-1,277.86

Finding the Fourth Proportional to 4,787.60, 7,180.82 and 1,277.86

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Solution

The fourth proportional to 4,787.60, 7,180.82 and 1,277.86 is: 1,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.60 : 7,180.82 = 1,277.86 : x
  2. Step 2: Convert to fraction form
    4,787.60/7,180.82 = 1,277.86/x
  3. Step 3: Cross multiply
    4,787.60x = 7,180.82 × 1,277.86
  4. Step 4: Simplify right side
    4,787.60x = 9,176,082.65
  5. Step 5: Solve for x
    x = 9,176,082.65/4,787.60
  6. Step 6: Final answer
    x = 1,916.64

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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.