Home / 9,009.88-12,430.34-5,231.70

Finding the Fourth Proportional to 9,009.88, 12,430.34 and 5,231.70

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Solution

The fourth proportional to 9,009.88, 12,430.34 and 5,231.70 is: 7,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,009.88 : 12,430.34 = 5,231.70 : x
  2. Step 2: Convert to fraction form
    9,009.88/12,430.34 = 5,231.70/x
  3. Step 3: Cross multiply
    9,009.88x = 12,430.34 × 5,231.70
  4. Step 4: Simplify right side
    9,009.88x = 65,031,809.78
  5. Step 5: Solve for x
    x = 65,031,809.78/9,009.88
  6. Step 6: Final answer
    x = 7,217.83

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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.