Home / 2,680.12-3,697.70-1,618.23

Finding the Fourth Proportional to 2,680.12, 3,697.70 and 1,618.23

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Solution

The fourth proportional to 2,680.12, 3,697.70 and 1,618.23 is: 2,232.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.12 : 3,697.70 = 1,618.23 : x
  2. Step 2: Convert to fraction form
    2,680.12/3,697.70 = 1,618.23/x
  3. Step 3: Cross multiply
    2,680.12x = 3,697.70 × 1,618.23
  4. Step 4: Simplify right side
    2,680.12x = 5,983,723.15
  5. Step 5: Solve for x
    x = 5,983,723.15/2,680.12
  6. Step 6: Final answer
    x = 2,232.63

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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.