Home / 5,377.23-7,418.88-3,138.57

Finding the Fourth Proportional to 5,377.23, 7,418.88 and 3,138.57

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Solution

The fourth proportional to 5,377.23, 7,418.88 and 3,138.57 is: 4,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.23 : 7,418.88 = 3,138.57 : x
  2. Step 2: Convert to fraction form
    5,377.23/7,418.88 = 3,138.57/x
  3. Step 3: Cross multiply
    5,377.23x = 7,418.88 × 3,138.57
  4. Step 4: Simplify right side
    5,377.23x = 23,284,674.20
  5. Step 5: Solve for x
    x = 23,284,674.20/5,377.23
  6. Step 6: Final answer
    x = 4,330.24

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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.