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Finding the Fourth Proportional to 7,895.76, 11,843.64 and 4,001.28

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Solution

The fourth proportional to 7,895.76, 11,843.64 and 4,001.28 is: 6,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,895.76 : 11,843.64 = 4,001.28 : x
  2. Step 2: Convert to fraction form
    7,895.76/11,843.64 = 4,001.28/x
  3. Step 3: Cross multiply
    7,895.76x = 11,843.64 × 4,001.28
  4. Step 4: Simplify right side
    7,895.76x = 47,389,719.86
  5. Step 5: Solve for x
    x = 47,389,719.86/7,895.76
  6. Step 6: Final answer
    x = 6,001.92

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.