Home / 2,586.78-3,874.50-1,285.92

Finding the Fourth Proportional to 2,586.78, 3,874.50 and 1,285.92

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Solution

The fourth proportional to 2,586.78, 3,874.50 and 1,285.92 is: 1,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.78 : 3,874.50 = 1,285.92 : x
  2. Step 2: Convert to fraction form
    2,586.78/3,874.50 = 1,285.92/x
  3. Step 3: Cross multiply
    2,586.78x = 3,874.50 × 1,285.92
  4. Step 4: Simplify right side
    2,586.78x = 4,982,297.04
  5. Step 5: Solve for x
    x = 4,982,297.04/2,586.78
  6. Step 6: Final answer
    x = 1,926.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.