Home / 5,351.39-7,384.20-3,111.54

Finding the Fourth Proportional to 5,351.39, 7,384.20 and 3,111.54

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Solution

The fourth proportional to 5,351.39, 7,384.20 and 3,111.54 is: 4,293.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.39 : 7,384.20 = 3,111.54 : x
  2. Step 2: Convert to fraction form
    5,351.39/7,384.20 = 3,111.54/x
  3. Step 3: Cross multiply
    5,351.39x = 7,384.20 × 3,111.54
  4. Step 4: Simplify right side
    5,351.39x = 22,976,228.20
  5. Step 5: Solve for x
    x = 22,976,228.20/5,351.39
  6. Step 6: Final answer
    x = 4,293.51

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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.