Home / 5,421.36-8,132.11-1,472.81

Finding the Fourth Proportional to 5,421.36, 8,132.11 and 1,472.81

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Solution

The fourth proportional to 5,421.36, 8,132.11 and 1,472.81 is: 2,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.36 : 8,132.11 = 1,472.81 : x
  2. Step 2: Convert to fraction form
    5,421.36/8,132.11 = 1,472.81/x
  3. Step 3: Cross multiply
    5,421.36x = 8,132.11 × 1,472.81
  4. Step 4: Simplify right side
    5,421.36x = 11,977,045.57
  5. Step 5: Solve for x
    x = 11,977,045.57/5,421.36
  6. Step 6: Final answer
    x = 2,209.23

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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.