Home / 2,805.12-3,868.80-2,058.24

Finding the Fourth Proportional to 2,805.12, 3,868.80 and 2,058.24

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Solution

The fourth proportional to 2,805.12, 3,868.80 and 2,058.24 is: 2,838.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.12 : 3,868.80 = 2,058.24 : x
  2. Step 2: Convert to fraction form
    2,805.12/3,868.80 = 2,058.24/x
  3. Step 3: Cross multiply
    2,805.12x = 3,868.80 × 2,058.24
  4. Step 4: Simplify right side
    2,805.12x = 7,962,918.91
  5. Step 5: Solve for x
    x = 7,962,918.91/2,805.12
  6. Step 6: Final answer
    x = 2,838.71

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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.