Home / 3,429.20-5,140.70-1,236.38

Finding the Fourth Proportional to 3,429.20, 5,140.70 and 1,236.38

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Solution

The fourth proportional to 3,429.20, 5,140.70 and 1,236.38 is: 1,853.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.20 : 5,140.70 = 1,236.38 : x
  2. Step 2: Convert to fraction form
    3,429.20/5,140.70 = 1,236.38/x
  3. Step 3: Cross multiply
    3,429.20x = 5,140.70 × 1,236.38
  4. Step 4: Simplify right side
    3,429.20x = 6,355,826.78
  5. Step 5: Solve for x
    x = 6,355,826.78/3,429.20
  6. Step 6: Final answer
    x = 1,853.45

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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.