Home / 7,990.79-11,028.92-5,302.15

Finding the Fourth Proportional to 7,990.79, 11,028.92 and 5,302.15

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Solution

The fourth proportional to 7,990.79, 11,028.92 and 5,302.15 is: 7,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.79 : 11,028.92 = 5,302.15 : x
  2. Step 2: Convert to fraction form
    7,990.79/11,028.92 = 5,302.15/x
  3. Step 3: Cross multiply
    7,990.79x = 11,028.92 × 5,302.15
  4. Step 4: Simplify right side
    7,990.79x = 58,476,934.09
  5. Step 5: Solve for x
    x = 58,476,934.09/7,990.79
  6. Step 6: Final answer
    x = 7,318.05

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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.