Home / 8,168.12-11,278.36-6,276.72

Finding the Fourth Proportional to 8,168.12, 11,278.36 and 6,276.72

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Solution

The fourth proportional to 8,168.12, 11,278.36 and 6,276.72 is: 8,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.12 : 11,278.36 = 6,276.72 : x
  2. Step 2: Convert to fraction form
    8,168.12/11,278.36 = 6,276.72/x
  3. Step 3: Cross multiply
    8,168.12x = 11,278.36 × 6,276.72
  4. Step 4: Simplify right side
    8,168.12x = 70,791,107.78
  5. Step 5: Solve for x
    x = 70,791,107.78/8,168.12
  6. Step 6: Final answer
    x = 8,666.76

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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.