Home / 2,860.50-3,947.55-2,231.74

Finding the Fourth Proportional to 2,860.50, 3,947.55 and 2,231.74

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Solution

The fourth proportional to 2,860.50, 3,947.55 and 2,231.74 is: 3,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.50 : 3,947.55 = 2,231.74 : x
  2. Step 2: Convert to fraction form
    2,860.50/3,947.55 = 2,231.74/x
  3. Step 3: Cross multiply
    2,860.50x = 3,947.55 × 2,231.74
  4. Step 4: Simplify right side
    2,860.50x = 8,809,905.24
  5. Step 5: Solve for x
    x = 8,809,905.24/2,860.50
  6. Step 6: Final answer
    x = 3,079.85

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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.