Home / 3,087.68-4,261.00-1,690.43

Finding the Fourth Proportional to 3,087.68, 4,261.00 and 1,690.43

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Solution

The fourth proportional to 3,087.68, 4,261.00 and 1,690.43 is: 2,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.68 : 4,261.00 = 1,690.43 : x
  2. Step 2: Convert to fraction form
    3,087.68/4,261.00 = 1,690.43/x
  3. Step 3: Cross multiply
    3,087.68x = 4,261.00 × 1,690.43
  4. Step 4: Simplify right side
    3,087.68x = 7,202,920.67
  5. Step 5: Solve for x
    x = 7,202,920.67/3,087.68
  6. Step 6: Final answer
    x = 2,332.79

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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.