Home / 2,449.51-3,380.49-1,387.28

Finding the Fourth Proportional to 2,449.51, 3,380.49 and 1,387.28

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Solution

The fourth proportional to 2,449.51, 3,380.49 and 1,387.28 is: 1,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.51 : 3,380.49 = 1,387.28 : x
  2. Step 2: Convert to fraction form
    2,449.51/3,380.49 = 1,387.28/x
  3. Step 3: Cross multiply
    2,449.51x = 3,380.49 × 1,387.28
  4. Step 4: Simplify right side
    2,449.51x = 4,689,686.17
  5. Step 5: Solve for x
    x = 4,689,686.17/2,449.51
  6. Step 6: Final answer
    x = 1,914.54

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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.