Home / 2,770.09-4,154.69-921.22

Finding the Fourth Proportional to 2,770.09, 4,154.69 and 921.22

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Solution

The fourth proportional to 2,770.09, 4,154.69 and 921.22 is: 1,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.09 : 4,154.69 = 921.22 : x
  2. Step 2: Convert to fraction form
    2,770.09/4,154.69 = 921.22/x
  3. Step 3: Cross multiply
    2,770.09x = 4,154.69 × 921.22
  4. Step 4: Simplify right side
    2,770.09x = 3,827,383.52
  5. Step 5: Solve for x
    x = 3,827,383.52/2,770.09
  6. Step 6: Final answer
    x = 1,381.68

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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.