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Finding the Fourth Proportional to 1,589.36, 2,192.64 and 959.72

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Solution

The fourth proportional to 1,589.36, 2,192.64 and 959.72 is: 1,324.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.36 : 2,192.64 = 959.72 : x
  2. Step 2: Convert to fraction form
    1,589.36/2,192.64 = 959.72/x
  3. Step 3: Cross multiply
    1,589.36x = 2,192.64 × 959.72
  4. Step 4: Simplify right side
    1,589.36x = 2,104,320.46
  5. Step 5: Solve for x
    x = 2,104,320.46/1,589.36
  6. Step 6: Final answer
    x = 1,324.00

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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.