Home / 5,319.92-7,344.48-4,138.40

Finding the Fourth Proportional to 5,319.92, 7,344.48 and 4,138.40

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Solution

The fourth proportional to 5,319.92, 7,344.48 and 4,138.40 is: 5,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.92 : 7,344.48 = 4,138.40 : x
  2. Step 2: Convert to fraction form
    5,319.92/7,344.48 = 4,138.40/x
  3. Step 3: Cross multiply
    5,319.92x = 7,344.48 × 4,138.40
  4. Step 4: Simplify right side
    5,319.92x = 30,394,396.03
  5. Step 5: Solve for x
    x = 30,394,396.03/5,319.92
  6. Step 6: Final answer
    x = 5,713.32

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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.