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Finding the Fourth Proportional to 1,759, 2,427.21 and 972.94

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Solution

The fourth proportional to 1,759, 2,427.21 and 972.94 is: 1,342.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759 : 2,427.21 = 972.94 : x
  2. Step 2: Convert to fraction form
    1,759/2,427.21 = 972.94/x
  3. Step 3: Cross multiply
    1,759x = 2,427.21 × 972.94
  4. Step 4: Simplify right side
    1,759x = 2,361,529.70
  5. Step 5: Solve for x
    x = 2,361,529.70/1,759
  6. Step 6: Final answer
    x = 1,342.54

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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.