Home / 2,785.50-3,844.92-1,666.80

Finding the Fourth Proportional to 2,785.50, 3,844.92 and 1,666.80

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Solution

The fourth proportional to 2,785.50, 3,844.92 and 1,666.80 is: 2,300.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.50 : 3,844.92 = 1,666.80 : x
  2. Step 2: Convert to fraction form
    2,785.50/3,844.92 = 1,666.80/x
  3. Step 3: Cross multiply
    2,785.50x = 3,844.92 × 1,666.80
  4. Step 4: Simplify right side
    2,785.50x = 6,408,712.66
  5. Step 5: Solve for x
    x = 6,408,712.66/2,785.50
  6. Step 6: Final answer
    x = 2,300.74

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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.