Home / 4,142.88-5,718.96-2,815.92

Finding the Fourth Proportional to 4,142.88, 5,718.96 and 2,815.92

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Solution

The fourth proportional to 4,142.88, 5,718.96 and 2,815.92 is: 3,887.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.88 : 5,718.96 = 2,815.92 : x
  2. Step 2: Convert to fraction form
    4,142.88/5,718.96 = 2,815.92/x
  3. Step 3: Cross multiply
    4,142.88x = 5,718.96 × 2,815.92
  4. Step 4: Simplify right side
    4,142.88x = 16,104,133.84
  5. Step 5: Solve for x
    x = 16,104,133.84/4,142.88
  6. Step 6: Final answer
    x = 3,887.18

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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.