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Finding the Fourth Proportional to 2,423.60, 3,640.80 and 2,331.80

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Solution

The fourth proportional to 2,423.60, 3,640.80 and 2,331.80 is: 3,502.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,423.60 : 3,640.80 = 2,331.80 : x
  2. Step 2: Convert to fraction form
    2,423.60/3,640.80 = 2,331.80/x
  3. Step 3: Cross multiply
    2,423.60x = 3,640.80 × 2,331.80
  4. Step 4: Simplify right side
    2,423.60x = 8,489,617.44
  5. Step 5: Solve for x
    x = 8,489,617.44/2,423.60
  6. Step 6: Final answer
    x = 3,502.90

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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.