Home / 5,138.18-7,707.25-1,242.59

Finding the Fourth Proportional to 5,138.18, 7,707.25 and 1,242.59

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Solution

The fourth proportional to 5,138.18, 7,707.25 and 1,242.59 is: 1,863.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.18 : 7,707.25 = 1,242.59 : x
  2. Step 2: Convert to fraction form
    5,138.18/7,707.25 = 1,242.59/x
  3. Step 3: Cross multiply
    5,138.18x = 7,707.25 × 1,242.59
  4. Step 4: Simplify right side
    5,138.18x = 9,576,922.26
  5. Step 5: Solve for x
    x = 9,576,922.26/5,138.18
  6. Step 6: Final answer
    x = 1,863.87

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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.