Home / 5,247.56-7,871.07-1,298.79

Finding the Fourth Proportional to 5,247.56, 7,871.07 and 1,298.79

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Solution

The fourth proportional to 5,247.56, 7,871.07 and 1,298.79 is: 1,948.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.56 : 7,871.07 = 1,298.79 : x
  2. Step 2: Convert to fraction form
    5,247.56/7,871.07 = 1,298.79/x
  3. Step 3: Cross multiply
    5,247.56x = 7,871.07 × 1,298.79
  4. Step 4: Simplify right side
    5,247.56x = 10,222,867.01
  5. Step 5: Solve for x
    x = 10,222,867.01/5,247.56
  6. Step 6: Final answer
    x = 1,948.12

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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.