Home / 2,220.09-3,329.45-921.25

Finding the Fourth Proportional to 2,220.09, 3,329.45 and 921.25

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Solution

The fourth proportional to 2,220.09, 3,329.45 and 921.25 is: 1,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.09 : 3,329.45 = 921.25 : x
  2. Step 2: Convert to fraction form
    2,220.09/3,329.45 = 921.25/x
  3. Step 3: Cross multiply
    2,220.09x = 3,329.45 × 921.25
  4. Step 4: Simplify right side
    2,220.09x = 3,067,255.81
  5. Step 5: Solve for x
    x = 3,067,255.81/2,220.09
  6. Step 6: Final answer
    x = 1,381.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.