Home / 5,423.04-8,139.18-2,138.46

Finding the Fourth Proportional to 5,423.04, 8,139.18 and 2,138.46

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Solution

The fourth proportional to 5,423.04, 8,139.18 and 2,138.46 is: 3,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.04 : 8,139.18 = 2,138.46 : x
  2. Step 2: Convert to fraction form
    5,423.04/8,139.18 = 2,138.46/x
  3. Step 3: Cross multiply
    5,423.04x = 8,139.18 × 2,138.46
  4. Step 4: Simplify right side
    5,423.04x = 17,405,310.86
  5. Step 5: Solve for x
    x = 17,405,310.86/5,423.04
  6. Step 6: Final answer
    x = 3,209.51

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1.5x scale

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.