Home / 2,454.60-3,387.05-1,392.20

Finding the Fourth Proportional to 2,454.60, 3,387.05 and 1,392.20

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Solution

The fourth proportional to 2,454.60, 3,387.05 and 1,392.20 is: 1,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.60 : 3,387.05 = 1,392.20 : x
  2. Step 2: Convert to fraction form
    2,454.60/3,387.05 = 1,392.20/x
  3. Step 3: Cross multiply
    2,454.60x = 3,387.05 × 1,392.20
  4. Step 4: Simplify right side
    2,454.60x = 4,715,427.11
  5. Step 5: Solve for x
    x = 4,715,427.11/2,454.60
  6. Step 6: Final answer
    x = 1,921.06

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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.