Home / 7,990.89-11,038.19-7,245.69

Finding the Fourth Proportional to 7,990.89, 11,038.19 and 7,245.69

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Solution

The fourth proportional to 7,990.89, 11,038.19 and 7,245.69 is: 10,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.89 : 11,038.19 = 7,245.69 : x
  2. Step 2: Convert to fraction form
    7,990.89/11,038.19 = 7,245.69/x
  3. Step 3: Cross multiply
    7,990.89x = 11,038.19 × 7,245.69
  4. Step 4: Simplify right side
    7,990.89x = 79,979,266.67
  5. Step 5: Solve for x
    x = 79,979,266.67/7,990.89
  6. Step 6: Final answer
    x = 10,008.81

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Similar ratio
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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.