Home / 8,521.20-12,778.16-2,678.27

Finding the Fourth Proportional to 8,521.20, 12,778.16 and 2,678.27

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Solution

The fourth proportional to 8,521.20, 12,778.16 and 2,678.27 is: 4,016.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.20 : 12,778.16 = 2,678.27 : x
  2. Step 2: Convert to fraction form
    8,521.20/12,778.16 = 2,678.27/x
  3. Step 3: Cross multiply
    8,521.20x = 12,778.16 × 2,678.27
  4. Step 4: Simplify right side
    8,521.20x = 34,223,285.30
  5. Step 5: Solve for x
    x = 34,223,285.30/8,521.20
  6. Step 6: Final answer
    x = 4,016.25

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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.