Home / 2,215.95-3,058.04-1,221.24

Finding the Fourth Proportional to 2,215.95, 3,058.04 and 1,221.24

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Solution

The fourth proportional to 2,215.95, 3,058.04 and 1,221.24 is: 1,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.95 : 3,058.04 = 1,221.24 : x
  2. Step 2: Convert to fraction form
    2,215.95/3,058.04 = 1,221.24/x
  3. Step 3: Cross multiply
    2,215.95x = 3,058.04 × 1,221.24
  4. Step 4: Simplify right side
    2,215.95x = 3,734,600.77
  5. Step 5: Solve for x
    x = 3,734,600.77/2,215.95
  6. Step 6: Final answer
    x = 1,685.33

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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.