Home / 8,913.12-12,306.12-5,561.04

Finding the Fourth Proportional to 8,913.12, 12,306.12 and 5,561.04

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Solution

The fourth proportional to 8,913.12, 12,306.12 and 5,561.04 is: 7,677.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.12 : 12,306.12 = 5,561.04 : x
  2. Step 2: Convert to fraction form
    8,913.12/12,306.12 = 5,561.04/x
  3. Step 3: Cross multiply
    8,913.12x = 12,306.12 × 5,561.04
  4. Step 4: Simplify right side
    8,913.12x = 68,434,825.56
  5. Step 5: Solve for x
    x = 68,434,825.56/8,913.12
  6. Step 6: Final answer
    x = 7,677.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.