Home / 8,178.16-11,286.20-4,641.70

Finding the Fourth Proportional to 8,178.16, 11,286.20 and 4,641.70

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Solution

The fourth proportional to 8,178.16, 11,286.20 and 4,641.70 is: 6,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.16 : 11,286.20 = 4,641.70 : x
  2. Step 2: Convert to fraction form
    8,178.16/11,286.20 = 4,641.70/x
  3. Step 3: Cross multiply
    8,178.16x = 11,286.20 × 4,641.70
  4. Step 4: Simplify right side
    8,178.16x = 52,387,098.11
  5. Step 5: Solve for x
    x = 52,387,098.11/8,178.16
  6. Step 6: Final answer
    x = 6,405.74

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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.