Home / 3,429.60-5,143.86-1,237.20

Finding the Fourth Proportional to 3,429.60, 5,143.86 and 1,237.20

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Solution

The fourth proportional to 3,429.60, 5,143.86 and 1,237.20 is: 1,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.60 : 5,143.86 = 1,237.20 : x
  2. Step 2: Convert to fraction form
    3,429.60/5,143.86 = 1,237.20/x
  3. Step 3: Cross multiply
    3,429.60x = 5,143.86 × 1,237.20
  4. Step 4: Simplify right side
    3,429.60x = 6,363,983.59
  5. Step 5: Solve for x
    x = 6,363,983.59/3,429.60
  6. Step 6: Final answer
    x = 1,855.61

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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.