Home / 4,429.20-6,112.40-2,439.80

Finding the Fourth Proportional to 4,429.20, 6,112.40 and 2,439.80

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Solution

The fourth proportional to 4,429.20, 6,112.40 and 2,439.80 is: 3,366.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,429.20 : 6,112.40 = 2,439.80 : x
  2. Step 2: Convert to fraction form
    4,429.20/6,112.40 = 2,439.80/x
  3. Step 3: Cross multiply
    4,429.20x = 6,112.40 × 2,439.80
  4. Step 4: Simplify right side
    4,429.20x = 14,913,033.52
  5. Step 5: Solve for x
    x = 14,913,033.52/4,429.20
  6. Step 6: Final answer
    x = 3,366.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.