Home / 2,058.60-3,080.61-1,188.66

Finding the Fourth Proportional to 2,058.60, 3,080.61 and 1,188.66

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Solution

The fourth proportional to 2,058.60, 3,080.61 and 1,188.66 is: 1,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.60 : 3,080.61 = 1,188.66 : x
  2. Step 2: Convert to fraction form
    2,058.60/3,080.61 = 1,188.66/x
  3. Step 3: Cross multiply
    2,058.60x = 3,080.61 × 1,188.66
  4. Step 4: Simplify right side
    2,058.60x = 3,661,797.88
  5. Step 5: Solve for x
    x = 3,661,797.88/2,058.60
  6. Step 6: Final answer
    x = 1,778.78

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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.