Home / 3,423.80-5,136.78-2,038.70

Finding the Fourth Proportional to 3,423.80, 5,136.78 and 2,038.70

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Solution

The fourth proportional to 3,423.80, 5,136.78 and 2,038.70 is: 3,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.80 : 5,136.78 = 2,038.70 : x
  2. Step 2: Convert to fraction form
    3,423.80/5,136.78 = 2,038.70/x
  3. Step 3: Cross multiply
    3,423.80x = 5,136.78 × 2,038.70
  4. Step 4: Simplify right side
    3,423.80x = 10,472,353.39
  5. Step 5: Solve for x
    x = 10,472,353.39/3,423.80
  6. Step 6: Final answer
    x = 3,058.69

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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.