Home / 1,631.92-2,251.96-933.20

Finding the Fourth Proportional to 1,631.92, 2,251.96 and 933.20

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Solution

The fourth proportional to 1,631.92, 2,251.96 and 933.20 is: 1,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.92 : 2,251.96 = 933.20 : x
  2. Step 2: Convert to fraction form
    1,631.92/2,251.96 = 933.20/x
  3. Step 3: Cross multiply
    1,631.92x = 2,251.96 × 933.20
  4. Step 4: Simplify right side
    1,631.92x = 2,101,529.07
  5. Step 5: Solve for x
    x = 2,101,529.07/1,631.92
  6. Step 6: Final answer
    x = 1,287.76

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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.