Home / 5,421.13-8,131.68-1,525.53

Finding the Fourth Proportional to 5,421.13, 8,131.68 and 1,525.53

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Solution

The fourth proportional to 5,421.13, 8,131.68 and 1,525.53 is: 2,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.13 : 8,131.68 = 1,525.53 : x
  2. Step 2: Convert to fraction form
    5,421.13/8,131.68 = 1,525.53/x
  3. Step 3: Cross multiply
    5,421.13x = 8,131.68 × 1,525.53
  4. Step 4: Simplify right side
    5,421.13x = 12,405,121.79
  5. Step 5: Solve for x
    x = 12,405,121.79/5,421.13
  6. Step 6: Final answer
    x = 2,288.29

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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.