Home / 2,219.02-3,326.67-921.40

Finding the Fourth Proportional to 2,219.02, 3,326.67 and 921.40

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Solution

The fourth proportional to 2,219.02, 3,326.67 and 921.40 is: 1,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.02 : 3,326.67 = 921.40 : x
  2. Step 2: Convert to fraction form
    2,219.02/3,326.67 = 921.40/x
  3. Step 3: Cross multiply
    2,219.02x = 3,326.67 × 921.40
  4. Step 4: Simplify right side
    2,219.02x = 3,065,193.74
  5. Step 5: Solve for x
    x = 3,065,193.74/2,219.02
  6. Step 6: Final answer
    x = 1,381.33

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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.