Home / 3,423.10-5,135.40-1,343.10

Finding the Fourth Proportional to 3,423.10, 5,135.40 and 1,343.10

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Solution

The fourth proportional to 3,423.10, 5,135.40 and 1,343.10 is: 2,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.10 : 5,135.40 = 1,343.10 : x
  2. Step 2: Convert to fraction form
    3,423.10/5,135.40 = 1,343.10/x
  3. Step 3: Cross multiply
    3,423.10x = 5,135.40 × 1,343.10
  4. Step 4: Simplify right side
    3,423.10x = 6,897,355.74
  5. Step 5: Solve for x
    x = 6,897,355.74/3,423.10
  6. Step 6: Final answer
    x = 2,014.94

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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.