Home / 2,371.20-3,272.48-1,376.40

Finding the Fourth Proportional to 2,371.20, 3,272.48 and 1,376.40

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Solution

The fourth proportional to 2,371.20, 3,272.48 and 1,376.40 is: 1,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.20 : 3,272.48 = 1,376.40 : x
  2. Step 2: Convert to fraction form
    2,371.20/3,272.48 = 1,376.40/x
  3. Step 3: Cross multiply
    2,371.20x = 3,272.48 × 1,376.40
  4. Step 4: Simplify right side
    2,371.20x = 4,504,241.47
  5. Step 5: Solve for x
    x = 4,504,241.47/2,371.20
  6. Step 6: Final answer
    x = 1,899.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.