Home / 7,421.60-11,132.54-3,471.80

Finding the Fourth Proportional to 7,421.60, 11,132.54 and 3,471.80

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Solution

The fourth proportional to 7,421.60, 11,132.54 and 3,471.80 is: 5,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.60 : 11,132.54 = 3,471.80 : x
  2. Step 2: Convert to fraction form
    7,421.60/11,132.54 = 3,471.80/x
  3. Step 3: Cross multiply
    7,421.60x = 11,132.54 × 3,471.80
  4. Step 4: Simplify right side
    7,421.60x = 38,649,905.39
  5. Step 5: Solve for x
    x = 38,649,905.39/7,421.60
  6. Step 6: Final answer
    x = 5,207.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.