Home / 5,138.11-7,085.91-3,731.14

Finding the Fourth Proportional to 5,138.11, 7,085.91 and 3,731.14

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Solution

The fourth proportional to 5,138.11, 7,085.91 and 3,731.14 is: 5,145.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.11 : 7,085.91 = 3,731.14 : x
  2. Step 2: Convert to fraction form
    5,138.11/7,085.91 = 3,731.14/x
  3. Step 3: Cross multiply
    5,138.11x = 7,085.91 × 3,731.14
  4. Step 4: Simplify right side
    5,138.11x = 26,438,522.24
  5. Step 5: Solve for x
    x = 26,438,522.24/5,138.11
  6. Step 6: Final answer
    x = 5,145.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.