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Finding the Fourth Proportional to 9,045.86, 12,481.03 and 5,218.67

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Solution

The fourth proportional to 9,045.86, 12,481.03 and 5,218.67 is: 7,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,045.86 : 12,481.03 = 5,218.67 : x
  2. Step 2: Convert to fraction form
    9,045.86/12,481.03 = 5,218.67/x
  3. Step 3: Cross multiply
    9,045.86x = 12,481.03 × 5,218.67
  4. Step 4: Simplify right side
    9,045.86x = 65,134,288.33
  5. Step 5: Solve for x
    x = 65,134,288.33/9,045.86
  6. Step 6: Final answer
    x = 7,200.45

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Double scale
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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.