Home / 7,981.25-11,008.51-6,917.13

Finding the Fourth Proportional to 7,981.25, 11,008.51 and 6,917.13

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Solution

The fourth proportional to 7,981.25, 11,008.51 and 6,917.13 is: 9,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.25 : 11,008.51 = 6,917.13 : x
  2. Step 2: Convert to fraction form
    7,981.25/11,008.51 = 6,917.13/x
  3. Step 3: Cross multiply
    7,981.25x = 11,008.51 × 6,917.13
  4. Step 4: Simplify right side
    7,981.25x = 76,147,294.78
  5. Step 5: Solve for x
    x = 76,147,294.78/7,981.25
  6. Step 6: Final answer
    x = 9,540.77

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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.