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Finding the Fourth Proportional to 2,872.01, 3,959.39 and 1,926.14

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Solution

The fourth proportional to 2,872.01, 3,959.39 and 1,926.14 is: 2,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.01 : 3,959.39 = 1,926.14 : x
  2. Step 2: Convert to fraction form
    2,872.01/3,959.39 = 1,926.14/x
  3. Step 3: Cross multiply
    2,872.01x = 3,959.39 × 1,926.14
  4. Step 4: Simplify right side
    2,872.01x = 7,626,310.03
  5. Step 5: Solve for x
    x = 7,626,310.03/2,872.01
  6. Step 6: Final answer
    x = 2,655.40

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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.