Home / 8,680.20-13,010.70-4,787.40

Finding the Fourth Proportional to 8,680.20, 13,010.70 and 4,787.40

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Solution

The fourth proportional to 8,680.20, 13,010.70 and 4,787.40 is: 7,175.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.20 : 13,010.70 = 4,787.40 : x
  2. Step 2: Convert to fraction form
    8,680.20/13,010.70 = 4,787.40/x
  3. Step 3: Cross multiply
    8,680.20x = 13,010.70 × 4,787.40
  4. Step 4: Simplify right side
    8,680.20x = 62,287,425.18
  5. Step 5: Solve for x
    x = 62,287,425.18/8,680.20
  6. Step 6: Final answer
    x = 7,175.81

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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.