Home / 3,712.78-5,119.23-2,386.54

Finding the Fourth Proportional to 3,712.78, 5,119.23 and 2,386.54

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Solution

The fourth proportional to 3,712.78, 5,119.23 and 2,386.54 is: 3,290.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.78 : 5,119.23 = 2,386.54 : x
  2. Step 2: Convert to fraction form
    3,712.78/5,119.23 = 2,386.54/x
  3. Step 3: Cross multiply
    3,712.78x = 5,119.23 × 2,386.54
  4. Step 4: Simplify right side
    3,712.78x = 12,217,247.16
  5. Step 5: Solve for x
    x = 12,217,247.16/3,712.78
  6. Step 6: Final answer
    x = 3,290.59

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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.