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Finding the Fourth Proportional to 4,747.81, 7,119.96 and 2,774.11

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Solution

The fourth proportional to 4,747.81, 7,119.96 and 2,774.11 is: 4,160.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.81 : 7,119.96 = 2,774.11 : x
  2. Step 2: Convert to fraction form
    4,747.81/7,119.96 = 2,774.11/x
  3. Step 3: Cross multiply
    4,747.81x = 7,119.96 × 2,774.11
  4. Step 4: Simplify right side
    4,747.81x = 19,751,552.24
  5. Step 5: Solve for x
    x = 19,751,552.24/4,747.81
  6. Step 6: Final answer
    x = 4,160.14

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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.