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Finding the Fourth Proportional to 1,751.72, 2,417.09 and 965.61

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Solution

The fourth proportional to 1,751.72, 2,417.09 and 965.61 is: 1,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.72 : 2,417.09 = 965.61 : x
  2. Step 2: Convert to fraction form
    1,751.72/2,417.09 = 965.61/x
  3. Step 3: Cross multiply
    1,751.72x = 2,417.09 × 965.61
  4. Step 4: Simplify right side
    1,751.72x = 2,333,961.45
  5. Step 5: Solve for x
    x = 2,333,961.45/1,751.72
  6. Step 6: Final answer
    x = 1,332.39

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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.