Home / 8,261.74-11,385.45-8,109.90

Finding the Fourth Proportional to 8,261.74, 11,385.45 and 8,109.90

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Solution

The fourth proportional to 8,261.74, 11,385.45 and 8,109.90 is: 11,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.74 : 11,385.45 = 8,109.90 : x
  2. Step 2: Convert to fraction form
    8,261.74/11,385.45 = 8,109.90/x
  3. Step 3: Cross multiply
    8,261.74x = 11,385.45 × 8,109.90
  4. Step 4: Simplify right side
    8,261.74x = 92,334,860.96
  5. Step 5: Solve for x
    x = 92,334,860.96/8,261.74
  6. Step 6: Final answer
    x = 11,176.20

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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.