Home / 2,868.08-3,958.78-1,689.84

Finding the Fourth Proportional to 2,868.08, 3,958.78 and 1,689.84

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Solution

The fourth proportional to 2,868.08, 3,958.78 and 1,689.84 is: 2,332.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.08 : 3,958.78 = 1,689.84 : x
  2. Step 2: Convert to fraction form
    2,868.08/3,958.78 = 1,689.84/x
  3. Step 3: Cross multiply
    2,868.08x = 3,958.78 × 1,689.84
  4. Step 4: Simplify right side
    2,868.08x = 6,689,700.57
  5. Step 5: Solve for x
    x = 6,689,700.57/2,868.08
  6. Step 6: Final answer
    x = 2,332.46

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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.