Home / 1,323.17-1,996.38-1,312.23

Finding the Fourth Proportional to 1,323.17, 1,996.38 and 1,312.23

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Solution

The fourth proportional to 1,323.17, 1,996.38 and 1,312.23 is: 1,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.17 : 1,996.38 = 1,312.23 : x
  2. Step 2: Convert to fraction form
    1,323.17/1,996.38 = 1,312.23/x
  3. Step 3: Cross multiply
    1,323.17x = 1,996.38 × 1,312.23
  4. Step 4: Simplify right side
    1,323.17x = 2,619,709.73
  5. Step 5: Solve for x
    x = 2,619,709.73/1,323.17
  6. Step 6: Final answer
    x = 1,979.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.