Home / 5,421.40-8,126.22-1,910.04

Finding the Fourth Proportional to 5,421.40, 8,126.22 and 1,910.04

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Solution

The fourth proportional to 5,421.40, 8,126.22 and 1,910.04 is: 2,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.40 : 8,126.22 = 1,910.04 : x
  2. Step 2: Convert to fraction form
    5,421.40/8,126.22 = 1,910.04/x
  3. Step 3: Cross multiply
    5,421.40x = 8,126.22 × 1,910.04
  4. Step 4: Simplify right side
    5,421.40x = 15,521,405.25
  5. Step 5: Solve for x
    x = 15,521,405.25/5,421.40
  6. Step 6: Final answer
    x = 2,862.99

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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.