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Finding the Fourth Proportional to 1,322.87, 1,824.28 and 963.62

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Solution

The fourth proportional to 1,322.87, 1,824.28 and 963.62 is: 1,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.87 : 1,824.28 = 963.62 : x
  2. Step 2: Convert to fraction form
    1,322.87/1,824.28 = 963.62/x
  3. Step 3: Cross multiply
    1,322.87x = 1,824.28 × 963.62
  4. Step 4: Simplify right side
    1,322.87x = 1,757,913.42
  5. Step 5: Solve for x
    x = 1,757,913.42/1,322.87
  6. Step 6: Final answer
    x = 1,328.87

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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.