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Finding the Fourth Proportional to 2,202.40, 3,296.40 and 1,712.80

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Solution

The fourth proportional to 2,202.40, 3,296.40 and 1,712.80 is: 2,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202.40 : 3,296.40 = 1,712.80 : x
  2. Step 2: Convert to fraction form
    2,202.40/3,296.40 = 1,712.80/x
  3. Step 3: Cross multiply
    2,202.40x = 3,296.40 × 1,712.80
  4. Step 4: Simplify right side
    2,202.40x = 5,646,073.92
  5. Step 5: Solve for x
    x = 5,646,073.92/2,202.40
  6. Step 6: Final answer
    x = 2,563.60

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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.