Home / 2,181.61-3,010.55-1,285.44

Finding the Fourth Proportional to 2,181.61, 3,010.55 and 1,285.44

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Solution

The fourth proportional to 2,181.61, 3,010.55 and 1,285.44 is: 1,773.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.61 : 3,010.55 = 1,285.44 : x
  2. Step 2: Convert to fraction form
    2,181.61/3,010.55 = 1,285.44/x
  3. Step 3: Cross multiply
    2,181.61x = 3,010.55 × 1,285.44
  4. Step 4: Simplify right side
    2,181.61x = 3,869,881.39
  5. Step 5: Solve for x
    x = 3,869,881.39/2,181.61
  6. Step 6: Final answer
    x = 1,773.86

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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.