Home / 5,251.96-7,878.16-1,964.72

Finding the Fourth Proportional to 5,251.96, 7,878.16 and 1,964.72

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Solution

The fourth proportional to 5,251.96, 7,878.16 and 1,964.72 is: 2,947.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.96 : 7,878.16 = 1,964.72 : x
  2. Step 2: Convert to fraction form
    5,251.96/7,878.16 = 1,964.72/x
  3. Step 3: Cross multiply
    5,251.96x = 7,878.16 × 1,964.72
  4. Step 4: Simplify right side
    5,251.96x = 15,478,378.52
  5. Step 5: Solve for x
    x = 15,478,378.52/5,251.96
  6. Step 6: Final answer
    x = 2,947.16

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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.