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Finding the Fourth Proportional to 1,642.79, 2,266.97 and 896.73

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Solution

The fourth proportional to 1,642.79, 2,266.97 and 896.73 is: 1,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.79 : 2,266.97 = 896.73 : x
  2. Step 2: Convert to fraction form
    1,642.79/2,266.97 = 896.73/x
  3. Step 3: Cross multiply
    1,642.79x = 2,266.97 × 896.73
  4. Step 4: Simplify right side
    1,642.79x = 2,032,860.01
  5. Step 5: Solve for x
    x = 2,032,860.01/1,642.79
  6. Step 6: Final answer
    x = 1,237.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.