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Finding the Fourth Proportional to 2,891.94, 4,337.73 and 812.22

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Solution

The fourth proportional to 2,891.94, 4,337.73 and 812.22 is: 1,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.94 : 4,337.73 = 812.22 : x
  2. Step 2: Convert to fraction form
    2,891.94/4,337.73 = 812.22/x
  3. Step 3: Cross multiply
    2,891.94x = 4,337.73 × 812.22
  4. Step 4: Simplify right side
    2,891.94x = 3,523,191.06
  5. Step 5: Solve for x
    x = 3,523,191.06/2,891.94
  6. Step 6: Final answer
    x = 1,218.28

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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.