Home / 8,521.80-12,784.28-3,327.36

Finding the Fourth Proportional to 8,521.80, 12,784.28 and 3,327.36

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Solution

The fourth proportional to 8,521.80, 12,784.28 and 3,327.36 is: 4,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.80 : 12,784.28 = 3,327.36 : x
  2. Step 2: Convert to fraction form
    8,521.80/12,784.28 = 3,327.36/x
  3. Step 3: Cross multiply
    8,521.80x = 12,784.28 × 3,327.36
  4. Step 4: Simplify right side
    8,521.80x = 42,537,901.90
  5. Step 5: Solve for x
    x = 42,537,901.90/8,521.80
  6. Step 6: Final answer
    x = 4,991.66

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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.