Home / 2,850.40-3,934.75-1,731.70

Finding the Fourth Proportional to 2,850.40, 3,934.75 and 1,731.70

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Solution

The fourth proportional to 2,850.40, 3,934.75 and 1,731.70 is: 2,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.40 : 3,934.75 = 1,731.70 : x
  2. Step 2: Convert to fraction form
    2,850.40/3,934.75 = 1,731.70/x
  3. Step 3: Cross multiply
    2,850.40x = 3,934.75 × 1,731.70
  4. Step 4: Simplify right side
    2,850.40x = 6,813,782.57
  5. Step 5: Solve for x
    x = 6,813,782.57/2,850.40
  6. Step 6: Final answer
    x = 2,390.47

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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.