Home / 2,868.12-3,961.32-1,922.40

Finding the Fourth Proportional to 2,868.12, 3,961.32 and 1,922.40

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Solution

The fourth proportional to 2,868.12, 3,961.32 and 1,922.40 is: 2,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.12 : 3,961.32 = 1,922.40 : x
  2. Step 2: Convert to fraction form
    2,868.12/3,961.32 = 1,922.40/x
  3. Step 3: Cross multiply
    2,868.12x = 3,961.32 × 1,922.40
  4. Step 4: Simplify right side
    2,868.12x = 7,615,241.57
  5. Step 5: Solve for x
    x = 7,615,241.57/2,868.12
  6. Step 6: Final answer
    x = 2,655.13

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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.