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Finding the Fourth Proportional to 1,126.63, 1,559.01 and 960.58

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Solution

The fourth proportional to 1,126.63, 1,559.01 and 960.58 is: 1,329.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.63 : 1,559.01 = 960.58 : x
  2. Step 2: Convert to fraction form
    1,126.63/1,559.01 = 960.58/x
  3. Step 3: Cross multiply
    1,126.63x = 1,559.01 × 960.58
  4. Step 4: Simplify right side
    1,126.63x = 1,497,553.83
  5. Step 5: Solve for x
    x = 1,497,553.83/1,126.63
  6. Step 6: Final answer
    x = 1,329.23

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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.