Home / 8,218.84-12,320.16-3,539.92

Finding the Fourth Proportional to 8,218.84, 12,320.16 and 3,539.92

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Solution

The fourth proportional to 8,218.84, 12,320.16 and 3,539.92 is: 5,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.84 : 12,320.16 = 3,539.92 : x
  2. Step 2: Convert to fraction form
    8,218.84/12,320.16 = 3,539.92/x
  3. Step 3: Cross multiply
    8,218.84x = 12,320.16 × 3,539.92
  4. Step 4: Simplify right side
    8,218.84x = 43,612,380.79
  5. Step 5: Solve for x
    x = 43,612,380.79/8,218.84
  6. Step 6: Final answer
    x = 5,306.39

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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.