Home / 2,215.93-3,058.02-1,221.22

Finding the Fourth Proportional to 2,215.93, 3,058.02 and 1,221.22

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Solution

The fourth proportional to 2,215.93, 3,058.02 and 1,221.22 is: 1,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.93 : 3,058.02 = 1,221.22 : x
  2. Step 2: Convert to fraction form
    2,215.93/3,058.02 = 1,221.22/x
  3. Step 3: Cross multiply
    2,215.93x = 3,058.02 × 1,221.22
  4. Step 4: Simplify right side
    2,215.93x = 3,734,515.18
  5. Step 5: Solve for x
    x = 3,734,515.18/2,215.93
  6. Step 6: Final answer
    x = 1,685.30

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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.