Home / 7,999.17-11,999.03-2,155.92

Finding the Fourth Proportional to 7,999.17, 11,999.03 and 2,155.92

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Solution

The fourth proportional to 7,999.17, 11,999.03 and 2,155.92 is: 3,233.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.17 : 11,999.03 = 2,155.92 : x
  2. Step 2: Convert to fraction form
    7,999.17/11,999.03 = 2,155.92/x
  3. Step 3: Cross multiply
    7,999.17x = 11,999.03 × 2,155.92
  4. Step 4: Simplify right side
    7,999.17x = 25,868,948.76
  5. Step 5: Solve for x
    x = 25,868,948.76/7,999.17
  6. Step 6: Final answer
    x = 3,233.95

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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.