Home / 2,144.42-2,959.80-1,397.08

Finding the Fourth Proportional to 2,144.42, 2,959.80 and 1,397.08

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Solution

The fourth proportional to 2,144.42, 2,959.80 and 1,397.08 is: 1,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.42 : 2,959.80 = 1,397.08 : x
  2. Step 2: Convert to fraction form
    2,144.42/2,959.80 = 1,397.08/x
  3. Step 3: Cross multiply
    2,144.42x = 2,959.80 × 1,397.08
  4. Step 4: Simplify right side
    2,144.42x = 4,135,077.38
  5. Step 5: Solve for x
    x = 4,135,077.38/2,144.42
  6. Step 6: Final answer
    x = 1,928.30

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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.