Home / 1,322.08-1,979.72-1,283.16

Finding the Fourth Proportional to 1,322.08, 1,979.72 and 1,283.16

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Solution

The fourth proportional to 1,322.08, 1,979.72 and 1,283.16 is: 1,921.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.08 : 1,979.72 = 1,283.16 : x
  2. Step 2: Convert to fraction form
    1,322.08/1,979.72 = 1,283.16/x
  3. Step 3: Cross multiply
    1,322.08x = 1,979.72 × 1,283.16
  4. Step 4: Simplify right side
    1,322.08x = 2,540,297.52
  5. Step 5: Solve for x
    x = 2,540,297.52/1,322.08
  6. Step 6: Final answer
    x = 1,921.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.