Home / 8,765.25-12,094.95-5,179.78

Finding the Fourth Proportional to 8,765.25, 12,094.95 and 5,179.78

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Solution

The fourth proportional to 8,765.25, 12,094.95 and 5,179.78 is: 7,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.25 : 12,094.95 = 5,179.78 : x
  2. Step 2: Convert to fraction form
    8,765.25/12,094.95 = 5,179.78/x
  3. Step 3: Cross multiply
    8,765.25x = 12,094.95 × 5,179.78
  4. Step 4: Simplify right side
    8,765.25x = 62,649,180.11
  5. Step 5: Solve for x
    x = 62,649,180.11/8,765.25
  6. Step 6: Final answer
    x = 7,147.45

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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.