Home / 5,421.61-8,132.28-2,499.92

Finding the Fourth Proportional to 5,421.61, 8,132.28 and 2,499.92

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Solution

The fourth proportional to 5,421.61, 8,132.28 and 2,499.92 is: 3,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.61 : 8,132.28 = 2,499.92 : x
  2. Step 2: Convert to fraction form
    5,421.61/8,132.28 = 2,499.92/x
  3. Step 3: Cross multiply
    5,421.61x = 8,132.28 × 2,499.92
  4. Step 4: Simplify right side
    5,421.61x = 20,330,008.76
  5. Step 5: Solve for x
    x = 20,330,008.76/5,421.61
  6. Step 6: Final answer
    x = 3,749.81

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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.