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Finding the Fourth Proportional to 2,910.12, 4,362.78 and 2,747.12

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Solution

The fourth proportional to 2,910.12, 4,362.78 and 2,747.12 is: 4,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.12 : 4,362.78 = 2,747.12 : x
  2. Step 2: Convert to fraction form
    2,910.12/4,362.78 = 2,747.12/x
  3. Step 3: Cross multiply
    2,910.12x = 4,362.78 × 2,747.12
  4. Step 4: Simplify right side
    2,910.12x = 11,985,080.19
  5. Step 5: Solve for x
    x = 11,985,080.19/2,910.12
  6. Step 6: Final answer
    x = 4,118.41

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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.