Home / 8,001.12-11,990.88-4,097.28

Finding the Fourth Proportional to 8,001.12, 11,990.88 and 4,097.28

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Solution

The fourth proportional to 8,001.12, 11,990.88 and 4,097.28 is: 6,140.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.12 : 11,990.88 = 4,097.28 : x
  2. Step 2: Convert to fraction form
    8,001.12/11,990.88 = 4,097.28/x
  3. Step 3: Cross multiply
    8,001.12x = 11,990.88 × 4,097.28
  4. Step 4: Simplify right side
    8,001.12x = 49,129,992.81
  5. Step 5: Solve for x
    x = 49,129,992.81/8,001.12
  6. Step 6: Final answer
    x = 6,140.39

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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.