Home / 8,109.72-11,191.16-4,572.88

Finding the Fourth Proportional to 8,109.72, 11,191.16 and 4,572.88

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Solution

The fourth proportional to 8,109.72, 11,191.16 and 4,572.88 is: 6,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.72 : 11,191.16 = 4,572.88 : x
  2. Step 2: Convert to fraction form
    8,109.72/11,191.16 = 4,572.88/x
  3. Step 3: Cross multiply
    8,109.72x = 11,191.16 × 4,572.88
  4. Step 4: Simplify right side
    8,109.72x = 51,175,831.74
  5. Step 5: Solve for x
    x = 51,175,831.74/8,109.72
  6. Step 6: Final answer
    x = 6,310.43

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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.