Home / 8,087.84-12,121.92-4,381.28

Finding the Fourth Proportional to 8,087.84, 12,121.92 and 4,381.28

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Solution

The fourth proportional to 8,087.84, 12,121.92 and 4,381.28 is: 6,566.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.84 : 12,121.92 = 4,381.28 : x
  2. Step 2: Convert to fraction form
    8,087.84/12,121.92 = 4,381.28/x
  3. Step 3: Cross multiply
    8,087.84x = 12,121.92 × 4,381.28
  4. Step 4: Simplify right side
    8,087.84x = 53,109,525.66
  5. Step 5: Solve for x
    x = 53,109,525.66/8,087.84
  6. Step 6: Final answer
    x = 6,566.59

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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.