Home / 2,135.80-3,203.70-1,151.65

Finding the Fourth Proportional to 2,135.80, 3,203.70 and 1,151.65

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Solution

The fourth proportional to 2,135.80, 3,203.70 and 1,151.65 is: 1,727.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.80 : 3,203.70 = 1,151.65 : x
  2. Step 2: Convert to fraction form
    2,135.80/3,203.70 = 1,151.65/x
  3. Step 3: Cross multiply
    2,135.80x = 3,203.70 × 1,151.65
  4. Step 4: Simplify right side
    2,135.80x = 3,689,541.11
  5. Step 5: Solve for x
    x = 3,689,541.11/2,135.80
  6. Step 6: Final answer
    x = 1,727.48

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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.