Home / 5,251.31-7,878.14-1,964.43

Finding the Fourth Proportional to 5,251.31, 7,878.14 and 1,964.43

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Solution

The fourth proportional to 5,251.31, 7,878.14 and 1,964.43 is: 2,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.31 : 7,878.14 = 1,964.43 : x
  2. Step 2: Convert to fraction form
    5,251.31/7,878.14 = 1,964.43/x
  3. Step 3: Cross multiply
    5,251.31x = 7,878.14 × 1,964.43
  4. Step 4: Simplify right side
    5,251.31x = 15,476,024.42
  5. Step 5: Solve for x
    x = 15,476,024.42/5,251.31
  6. Step 6: Final answer
    x = 2,947.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.