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Finding the Fourth Proportional to 2,910.79, 4,367 and 2,218.24

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Solution

The fourth proportional to 2,910.79, 4,367 and 2,218.24 is: 3,327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.79 : 4,367 = 2,218.24 : x
  2. Step 2: Convert to fraction form
    2,910.79/4,367 = 2,218.24/x
  3. Step 3: Cross multiply
    2,910.79x = 4,367 × 2,218.24
  4. Step 4: Simplify right side
    2,910.79x = 9,687,054.08
  5. Step 5: Solve for x
    x = 9,687,054.08/2,910.79
  6. Step 6: Final answer
    x = 3,327.98

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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.