Home / 2,486.81-3,432.35-1,947.38

Finding the Fourth Proportional to 2,486.81, 3,432.35 and 1,947.38

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Solution

The fourth proportional to 2,486.81, 3,432.35 and 1,947.38 is: 2,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.81 : 3,432.35 = 1,947.38 : x
  2. Step 2: Convert to fraction form
    2,486.81/3,432.35 = 1,947.38/x
  3. Step 3: Cross multiply
    2,486.81x = 3,432.35 × 1,947.38
  4. Step 4: Simplify right side
    2,486.81x = 6,684,086.03
  5. Step 5: Solve for x
    x = 6,684,086.03/2,486.81
  6. Step 6: Final answer
    x = 2,687.81

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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.