Home / 7,990.89-11,033.30-5,159.92

Finding the Fourth Proportional to 7,990.89, 11,033.30 and 5,159.92

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Solution

The fourth proportional to 7,990.89, 11,033.30 and 5,159.92 is: 7,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.89 : 11,033.30 = 5,159.92 : x
  2. Step 2: Convert to fraction form
    7,990.89/11,033.30 = 5,159.92/x
  3. Step 3: Cross multiply
    7,990.89x = 11,033.30 × 5,159.92
  4. Step 4: Simplify right side
    7,990.89x = 56,930,922.32
  5. Step 5: Solve for x
    x = 56,930,922.32/7,990.89
  6. Step 6: Final answer
    x = 7,124.48

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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.