Home / 3,862.78-5,330.90-2,184.34

Finding the Fourth Proportional to 3,862.78, 5,330.90 and 2,184.34

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Solution

The fourth proportional to 3,862.78, 5,330.90 and 2,184.34 is: 3,014.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.78 : 5,330.90 = 2,184.34 : x
  2. Step 2: Convert to fraction form
    3,862.78/5,330.90 = 2,184.34/x
  3. Step 3: Cross multiply
    3,862.78x = 5,330.90 × 2,184.34
  4. Step 4: Simplify right side
    3,862.78x = 11,644,498.11
  5. Step 5: Solve for x
    x = 11,644,498.11/3,862.78
  6. Step 6: Final answer
    x = 3,014.54

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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.