Home / 4,242.78-5,856.15-2,380.38

Finding the Fourth Proportional to 4,242.78, 5,856.15 and 2,380.38

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Solution

The fourth proportional to 4,242.78, 5,856.15 and 2,380.38 is: 3,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242.78 : 5,856.15 = 2,380.38 : x
  2. Step 2: Convert to fraction form
    4,242.78/5,856.15 = 2,380.38/x
  3. Step 3: Cross multiply
    4,242.78x = 5,856.15 × 2,380.38
  4. Step 4: Simplify right side
    4,242.78x = 13,939,862.34
  5. Step 5: Solve for x
    x = 13,939,862.34/4,242.78
  6. Step 6: Final answer
    x = 3,285.55

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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.