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Finding the Fourth Proportional to 1,751.67, 2,417.39 and 965.78

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Solution

The fourth proportional to 1,751.67, 2,417.39 and 965.78 is: 1,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.67 : 2,417.39 = 965.78 : x
  2. Step 2: Convert to fraction form
    1,751.67/2,417.39 = 965.78/x
  3. Step 3: Cross multiply
    1,751.67x = 2,417.39 × 965.78
  4. Step 4: Simplify right side
    1,751.67x = 2,334,650.00
  5. Step 5: Solve for x
    x = 2,334,650.00/1,751.67
  6. Step 6: Final answer
    x = 1,332.81

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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.