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Finding the Fourth Proportional to 1,743.96, 2,615.94 and 866.28

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Solution

The fourth proportional to 1,743.96, 2,615.94 and 866.28 is: 1,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.96 : 2,615.94 = 866.28 : x
  2. Step 2: Convert to fraction form
    1,743.96/2,615.94 = 866.28/x
  3. Step 3: Cross multiply
    1,743.96x = 2,615.94 × 866.28
  4. Step 4: Simplify right side
    1,743.96x = 2,266,136.50
  5. Step 5: Solve for x
    x = 2,266,136.50/1,743.96
  6. Step 6: Final answer
    x = 1,299.42

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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.