Home / 9,177.92-12,671.52-6,390.08

Finding the Fourth Proportional to 9,177.92, 12,671.52 and 6,390.08

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Solution

The fourth proportional to 9,177.92, 12,671.52 and 6,390.08 is: 8,822.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.92 : 12,671.52 = 6,390.08 : x
  2. Step 2: Convert to fraction form
    9,177.92/12,671.52 = 6,390.08/x
  3. Step 3: Cross multiply
    9,177.92x = 12,671.52 × 6,390.08
  4. Step 4: Simplify right side
    9,177.92x = 80,972,026.52
  5. Step 5: Solve for x
    x = 80,972,026.52/9,177.92
  6. Step 6: Final answer
    x = 8,822.48

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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.