Home / 5,138.24-7,707.36-2,538.56

Finding the Fourth Proportional to 5,138.24, 7,707.36 and 2,538.56

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Solution

The fourth proportional to 5,138.24, 7,707.36 and 2,538.56 is: 3,807.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.24 : 7,707.36 = 2,538.56 : x
  2. Step 2: Convert to fraction form
    5,138.24/7,707.36 = 2,538.56/x
  3. Step 3: Cross multiply
    5,138.24x = 7,707.36 × 2,538.56
  4. Step 4: Simplify right side
    5,138.24x = 19,565,595.80
  5. Step 5: Solve for x
    x = 19,565,595.80/5,138.24
  6. Step 6: Final answer
    x = 3,807.84

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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.