Home / 2,231.87-3,337.95-1,986.81

Finding the Fourth Proportional to 2,231.87, 3,337.95 and 1,986.81

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Solution

The fourth proportional to 2,231.87, 3,337.95 and 1,986.81 is: 2,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.87 : 3,337.95 = 1,986.81 : x
  2. Step 2: Convert to fraction form
    2,231.87/3,337.95 = 1,986.81/x
  3. Step 3: Cross multiply
    2,231.87x = 3,337.95 × 1,986.81
  4. Step 4: Simplify right side
    2,231.87x = 6,631,872.44
  5. Step 5: Solve for x
    x = 6,631,872.44/2,231.87
  6. Step 6: Final answer
    x = 2,971.45

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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.