Home / 2,135.52-3,185.34-1,938.66

Finding the Fourth Proportional to 2,135.52, 3,185.34 and 1,938.66

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Solution

The fourth proportional to 2,135.52, 3,185.34 and 1,938.66 is: 2,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.52 : 3,185.34 = 1,938.66 : x
  2. Step 2: Convert to fraction form
    2,135.52/3,185.34 = 1,938.66/x
  3. Step 3: Cross multiply
    2,135.52x = 3,185.34 × 1,938.66
  4. Step 4: Simplify right side
    2,135.52x = 6,175,291.24
  5. Step 5: Solve for x
    x = 6,175,291.24/2,135.52
  6. Step 6: Final answer
    x = 2,891.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.