Home / 5,245.68-7,871.56-1,958.65

Finding the Fourth Proportional to 5,245.68, 7,871.56 and 1,958.65

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Solution

The fourth proportional to 5,245.68, 7,871.56 and 1,958.65 is: 2,939.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.68 : 7,871.56 = 1,958.65 : x
  2. Step 2: Convert to fraction form
    5,245.68/7,871.56 = 1,958.65/x
  3. Step 3: Cross multiply
    5,245.68x = 7,871.56 × 1,958.65
  4. Step 4: Simplify right side
    5,245.68x = 15,417,630.99
  5. Step 5: Solve for x
    x = 15,417,630.99/5,245.68
  6. Step 6: Final answer
    x = 2,939.11

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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.