Home / 5,614.20-8,421.90-2,105.88

Finding the Fourth Proportional to 5,614.20, 8,421.90 and 2,105.88

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Solution

The fourth proportional to 5,614.20, 8,421.90 and 2,105.88 is: 3,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,614.20 : 8,421.90 = 2,105.88 : x
  2. Step 2: Convert to fraction form
    5,614.20/8,421.90 = 2,105.88/x
  3. Step 3: Cross multiply
    5,614.20x = 8,421.90 × 2,105.88
  4. Step 4: Simplify right side
    5,614.20x = 17,735,510.77
  5. Step 5: Solve for x
    x = 17,735,510.77/5,614.20
  6. Step 6: Final answer
    x = 3,159.05

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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.