Home / 2,072.43-2,859.73-1,188.21

Finding the Fourth Proportional to 2,072.43, 2,859.73 and 1,188.21

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Solution

The fourth proportional to 2,072.43, 2,859.73 and 1,188.21 is: 1,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.43 : 2,859.73 = 1,188.21 : x
  2. Step 2: Convert to fraction form
    2,072.43/2,859.73 = 1,188.21/x
  3. Step 3: Cross multiply
    2,072.43x = 2,859.73 × 1,188.21
  4. Step 4: Simplify right side
    2,072.43x = 3,397,956.81
  5. Step 5: Solve for x
    x = 3,397,956.81/2,072.43
  6. Step 6: Final answer
    x = 1,639.60

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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.