Home / 2,454.91-3,387.24-1,392.57

Finding the Fourth Proportional to 2,454.91, 3,387.24 and 1,392.57

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Solution

The fourth proportional to 2,454.91, 3,387.24 and 1,392.57 is: 1,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.91 : 3,387.24 = 1,392.57 : x
  2. Step 2: Convert to fraction form
    2,454.91/3,387.24 = 1,392.57/x
  3. Step 3: Cross multiply
    2,454.91x = 3,387.24 × 1,392.57
  4. Step 4: Simplify right side
    2,454.91x = 4,716,968.81
  5. Step 5: Solve for x
    x = 4,716,968.81/2,454.91
  6. Step 6: Final answer
    x = 1,921.44

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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.