Home / 2,216.34-3,058.48-1,221.60

Finding the Fourth Proportional to 2,216.34, 3,058.48 and 1,221.60

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Solution

The fourth proportional to 2,216.34, 3,058.48 and 1,221.60 is: 1,685.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.34 : 3,058.48 = 1,221.60 : x
  2. Step 2: Convert to fraction form
    2,216.34/3,058.48 = 1,221.60/x
  3. Step 3: Cross multiply
    2,216.34x = 3,058.48 × 1,221.60
  4. Step 4: Simplify right side
    2,216.34x = 3,736,239.17
  5. Step 5: Solve for x
    x = 3,736,239.17/2,216.34
  6. Step 6: Final answer
    x = 1,685.77

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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.