Home / 8,117.77-12,177.88-2,851.86

Finding the Fourth Proportional to 8,117.77, 12,177.88 and 2,851.86

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Solution

The fourth proportional to 8,117.77, 12,177.88 and 2,851.86 is: 4,278.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.77 : 12,177.88 = 2,851.86 : x
  2. Step 2: Convert to fraction form
    8,117.77/12,177.88 = 2,851.86/x
  3. Step 3: Cross multiply
    8,117.77x = 12,177.88 × 2,851.86
  4. Step 4: Simplify right side
    8,117.77x = 34,729,608.86
  5. Step 5: Solve for x
    x = 34,729,608.86/8,117.77
  6. Step 6: Final answer
    x = 4,278.22

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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.