Home / 2,072.91-2,860.53-1,188.66

Finding the Fourth Proportional to 2,072.91, 2,860.53 and 1,188.66

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Solution

The fourth proportional to 2,072.91, 2,860.53 and 1,188.66 is: 1,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.91 : 2,860.53 = 1,188.66 : x
  2. Step 2: Convert to fraction form
    2,072.91/2,860.53 = 1,188.66/x
  3. Step 3: Cross multiply
    2,072.91x = 2,860.53 × 1,188.66
  4. Step 4: Simplify right side
    2,072.91x = 3,400,197.59
  5. Step 5: Solve for x
    x = 3,400,197.59/2,072.91
  6. Step 6: Final answer
    x = 1,640.30

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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.