Home / 5,143.44-7,715.18-1,247.86

Finding the Fourth Proportional to 5,143.44, 7,715.18 and 1,247.86

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Solution

The fourth proportional to 5,143.44, 7,715.18 and 1,247.86 is: 1,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.44 : 7,715.18 = 1,247.86 : x
  2. Step 2: Convert to fraction form
    5,143.44/7,715.18 = 1,247.86/x
  3. Step 3: Cross multiply
    5,143.44x = 7,715.18 × 1,247.86
  4. Step 4: Simplify right side
    5,143.44x = 9,627,464.51
  5. Step 5: Solve for x
    x = 9,627,464.51/5,143.44
  6. Step 6: Final answer
    x = 1,871.79

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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.