Home / 2,785.70-3,836.40-2,431.46

Finding the Fourth Proportional to 2,785.70, 3,836.40 and 2,431.46

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Solution

The fourth proportional to 2,785.70, 3,836.40 and 2,431.46 is: 3,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.70 : 3,836.40 = 2,431.46 : x
  2. Step 2: Convert to fraction form
    2,785.70/3,836.40 = 2,431.46/x
  3. Step 3: Cross multiply
    2,785.70x = 3,836.40 × 2,431.46
  4. Step 4: Simplify right side
    2,785.70x = 9,328,053.14
  5. Step 5: Solve for x
    x = 9,328,053.14/2,785.70
  6. Step 6: Final answer
    x = 3,348.55

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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.