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Finding the Fourth Proportional to 2,513.80, 3,770.70 and 2,240.20

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Solution

The fourth proportional to 2,513.80, 3,770.70 and 2,240.20 is: 3,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,513.80 : 3,770.70 = 2,240.20 : x
  2. Step 2: Convert to fraction form
    2,513.80/3,770.70 = 2,240.20/x
  3. Step 3: Cross multiply
    2,513.80x = 3,770.70 × 2,240.20
  4. Step 4: Simplify right side
    2,513.80x = 8,447,122.14
  5. Step 5: Solve for x
    x = 8,447,122.14/2,513.80
  6. Step 6: Final answer
    x = 3,360.30

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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.