Home / 8,108.38-12,168.02-3,177.40

Finding the Fourth Proportional to 8,108.38, 12,168.02 and 3,177.40

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Solution

The fourth proportional to 8,108.38, 12,168.02 and 3,177.40 is: 4,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.38 : 12,168.02 = 3,177.40 : x
  2. Step 2: Convert to fraction form
    8,108.38/12,168.02 = 3,177.40/x
  3. Step 3: Cross multiply
    8,108.38x = 12,168.02 × 3,177.40
  4. Step 4: Simplify right side
    8,108.38x = 38,662,666.75
  5. Step 5: Solve for x
    x = 38,662,666.75/8,108.38
  6. Step 6: Final answer
    x = 4,768.24

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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.