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Finding the Fourth Proportional to 1,721.82, 2,376.07 and 965.58

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Solution

The fourth proportional to 1,721.82, 2,376.07 and 965.58 is: 1,332.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.82 : 2,376.07 = 965.58 : x
  2. Step 2: Convert to fraction form
    1,721.82/2,376.07 = 965.58/x
  3. Step 3: Cross multiply
    1,721.82x = 2,376.07 × 965.58
  4. Step 4: Simplify right side
    1,721.82x = 2,294,285.67
  5. Step 5: Solve for x
    x = 2,294,285.67/1,721.82
  6. Step 6: Final answer
    x = 1,332.48

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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.