Home / 7,126.38-10,685.44-3,423.55

Finding the Fourth Proportional to 7,126.38, 10,685.44 and 3,423.55

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Solution

The fourth proportional to 7,126.38, 10,685.44 and 3,423.55 is: 5,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.38 : 10,685.44 = 3,423.55 : x
  2. Step 2: Convert to fraction form
    7,126.38/10,685.44 = 3,423.55/x
  3. Step 3: Cross multiply
    7,126.38x = 10,685.44 × 3,423.55
  4. Step 4: Simplify right side
    7,126.38x = 36,582,138.11
  5. Step 5: Solve for x
    x = 36,582,138.11/7,126.38
  6. Step 6: Final answer
    x = 5,133.34

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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.