Home / 5,138.91-7,708.41-1,243.32

Finding the Fourth Proportional to 5,138.91, 7,708.41 and 1,243.32

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Solution

The fourth proportional to 5,138.91, 7,708.41 and 1,243.32 is: 1,864.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.91 : 7,708.41 = 1,243.32 : x
  2. Step 2: Convert to fraction form
    5,138.91/7,708.41 = 1,243.32/x
  3. Step 3: Cross multiply
    5,138.91x = 7,708.41 × 1,243.32
  4. Step 4: Simplify right side
    5,138.91x = 9,584,020.32
  5. Step 5: Solve for x
    x = 9,584,020.32/5,138.91
  6. Step 6: Final answer
    x = 1,864.99

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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.