Home / 2,114.40-2,919.60-1,418.88

Finding the Fourth Proportional to 2,114.40, 2,919.60 and 1,418.88

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Solution

The fourth proportional to 2,114.40, 2,919.60 and 1,418.88 is: 1,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.40 : 2,919.60 = 1,418.88 : x
  2. Step 2: Convert to fraction form
    2,114.40/2,919.60 = 1,418.88/x
  3. Step 3: Cross multiply
    2,114.40x = 2,919.60 × 1,418.88
  4. Step 4: Simplify right side
    2,114.40x = 4,142,562.05
  5. Step 5: Solve for x
    x = 4,142,562.05/2,114.40
  6. Step 6: Final answer
    x = 1,959.21

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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.