Home / 2,770.56-4,154.66-921.18

Finding the Fourth Proportional to 2,770.56, 4,154.66 and 921.18

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Solution

The fourth proportional to 2,770.56, 4,154.66 and 921.18 is: 1,381.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.56 : 4,154.66 = 921.18 : x
  2. Step 2: Convert to fraction form
    2,770.56/4,154.66 = 921.18/x
  3. Step 3: Cross multiply
    2,770.56x = 4,154.66 × 921.18
  4. Step 4: Simplify right side
    2,770.56x = 3,827,189.70
  5. Step 5: Solve for x
    x = 3,827,189.70/2,770.56
  6. Step 6: Final answer
    x = 1,381.38

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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.