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Finding the Fourth Proportional to 1,706.97, 2,355.78 and 960.90

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Solution

The fourth proportional to 1,706.97, 2,355.78 and 960.90 is: 1,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,706.97 : 2,355.78 = 960.90 : x
  2. Step 2: Convert to fraction form
    1,706.97/2,355.78 = 960.90/x
  3. Step 3: Cross multiply
    1,706.97x = 2,355.78 × 960.90
  4. Step 4: Simplify right side
    1,706.97x = 2,263,663.77
  5. Step 5: Solve for x
    x = 2,263,663.77/1,706.97
  6. Step 6: Final answer
    x = 1,326.13

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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.