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Finding the Fourth Proportional to 2,791.40, 4,187.12 and 844.16

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Solution

The fourth proportional to 2,791.40, 4,187.12 and 844.16 is: 1,266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.40 : 4,187.12 = 844.16 : x
  2. Step 2: Convert to fraction form
    2,791.40/4,187.12 = 844.16/x
  3. Step 3: Cross multiply
    2,791.40x = 4,187.12 × 844.16
  4. Step 4: Simplify right side
    2,791.40x = 3,534,599.22
  5. Step 5: Solve for x
    x = 3,534,599.22/2,791.40
  6. Step 6: Final answer
    x = 1,266.25

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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.