Home / 8,521.15-12,787.57-2,974.50

Finding the Fourth Proportional to 8,521.15, 12,787.57 and 2,974.50

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Solution

The fourth proportional to 8,521.15, 12,787.57 and 2,974.50 is: 4,463.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.15 : 12,787.57 = 2,974.50 : x
  2. Step 2: Convert to fraction form
    8,521.15/12,787.57 = 2,974.50/x
  3. Step 3: Cross multiply
    8,521.15x = 12,787.57 × 2,974.50
  4. Step 4: Simplify right side
    8,521.15x = 38,036,610.98
  5. Step 5: Solve for x
    x = 38,036,610.98/8,521.15
  6. Step 6: Final answer
    x = 4,463.79

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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.