Home / 8,521.28-12,787.68-3,326.48

Finding the Fourth Proportional to 8,521.28, 12,787.68 and 3,326.48

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Solution

The fourth proportional to 8,521.28, 12,787.68 and 3,326.48 is: 4,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.28 : 12,787.68 = 3,326.48 : x
  2. Step 2: Convert to fraction form
    8,521.28/12,787.68 = 3,326.48/x
  3. Step 3: Cross multiply
    8,521.28x = 12,787.68 × 3,326.48
  4. Step 4: Simplify right side
    8,521.28x = 42,537,961.77
  5. Step 5: Solve for x
    x = 42,537,961.77/8,521.28
  6. Step 6: Final answer
    x = 4,991.97

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1.5x scale

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.