Home / 6,218.78-8,581.75-3,386.21

Finding the Fourth Proportional to 6,218.78, 8,581.75 and 3,386.21

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Solution

The fourth proportional to 6,218.78, 8,581.75 and 3,386.21 is: 4,672.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,218.78 : 8,581.75 = 3,386.21 : x
  2. Step 2: Convert to fraction form
    6,218.78/8,581.75 = 3,386.21/x
  3. Step 3: Cross multiply
    6,218.78x = 8,581.75 × 3,386.21
  4. Step 4: Simplify right side
    6,218.78x = 29,059,556.29
  5. Step 5: Solve for x
    x = 29,059,556.29/6,218.78
  6. Step 6: Final answer
    x = 4,672.87

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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.