Home / 2,065.60-3,099.92-1,286.74

Finding the Fourth Proportional to 2,065.60, 3,099.92 and 1,286.74

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Solution

The fourth proportional to 2,065.60, 3,099.92 and 1,286.74 is: 1,931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,065.60 : 3,099.92 = 1,286.74 : x
  2. Step 2: Convert to fraction form
    2,065.60/3,099.92 = 1,286.74/x
  3. Step 3: Cross multiply
    2,065.60x = 3,099.92 × 1,286.74
  4. Step 4: Simplify right side
    2,065.60x = 3,988,791.06
  5. Step 5: Solve for x
    x = 3,988,791.06/2,065.60
  6. Step 6: Final answer
    x = 1,931.06

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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.