Home / 8,117.52-12,176.28-2,920.56

Finding the Fourth Proportional to 8,117.52, 12,176.28 and 2,920.56

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Solution

The fourth proportional to 8,117.52, 12,176.28 and 2,920.56 is: 4,380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.52 : 12,176.28 = 2,920.56 : x
  2. Step 2: Convert to fraction form
    8,117.52/12,176.28 = 2,920.56/x
  3. Step 3: Cross multiply
    8,117.52x = 12,176.28 × 2,920.56
  4. Step 4: Simplify right side
    8,117.52x = 35,561,556.32
  5. Step 5: Solve for x
    x = 35,561,556.32/8,117.52
  6. Step 6: Final answer
    x = 4,380.84

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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.