Home / 2,868.87-3,958.55-1,690.17

Finding the Fourth Proportional to 2,868.87, 3,958.55 and 1,690.17

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Solution

The fourth proportional to 2,868.87, 3,958.55 and 1,690.17 is: 2,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.87 : 3,958.55 = 1,690.17 : x
  2. Step 2: Convert to fraction form
    2,868.87/3,958.55 = 1,690.17/x
  3. Step 3: Cross multiply
    2,868.87x = 3,958.55 × 1,690.17
  4. Step 4: Simplify right side
    2,868.87x = 6,690,622.45
  5. Step 5: Solve for x
    x = 6,690,622.45/2,868.87
  6. Step 6: Final answer
    x = 2,332.15

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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.