Home / 2,215.97-3,058.07-1,271.91

Finding the Fourth Proportional to 2,215.97, 3,058.07 and 1,271.91

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Solution

The fourth proportional to 2,215.97, 3,058.07 and 1,271.91 is: 1,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.97 : 3,058.07 = 1,271.91 : x
  2. Step 2: Convert to fraction form
    2,215.97/3,058.07 = 1,271.91/x
  3. Step 3: Cross multiply
    2,215.97x = 3,058.07 × 1,271.91
  4. Step 4: Simplify right side
    2,215.97x = 3,889,583.45
  5. Step 5: Solve for x
    x = 3,889,583.45/2,215.97
  6. Step 6: Final answer
    x = 1,755.25

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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.