Home / 8,178.48-11,286.60-4,641.60

Finding the Fourth Proportional to 8,178.48, 11,286.60 and 4,641.60

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Solution

The fourth proportional to 8,178.48, 11,286.60 and 4,641.60 is: 6,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.48 : 11,286.60 = 4,641.60 : x
  2. Step 2: Convert to fraction form
    8,178.48/11,286.60 = 4,641.60/x
  3. Step 3: Cross multiply
    8,178.48x = 11,286.60 × 4,641.60
  4. Step 4: Simplify right side
    8,178.48x = 52,387,882.56
  5. Step 5: Solve for x
    x = 52,387,882.56/8,178.48
  6. Step 6: Final answer
    x = 6,405.58

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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.