Home / 3,426.60-5,136.30-1,345.80

Finding the Fourth Proportional to 3,426.60, 5,136.30 and 1,345.80

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Solution

The fourth proportional to 3,426.60, 5,136.30 and 1,345.80 is: 2,017.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.60 : 5,136.30 = 1,345.80 : x
  2. Step 2: Convert to fraction form
    3,426.60/5,136.30 = 1,345.80/x
  3. Step 3: Cross multiply
    3,426.60x = 5,136.30 × 1,345.80
  4. Step 4: Simplify right side
    3,426.60x = 6,912,432.54
  5. Step 5: Solve for x
    x = 6,912,432.54/3,426.60
  6. Step 6: Final answer
    x = 2,017.29

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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.