Home / 2,769.29-4,154.73-921.62

Finding the Fourth Proportional to 2,769.29, 4,154.73 and 921.62

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Solution

The fourth proportional to 2,769.29, 4,154.73 and 921.62 is: 1,382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.29 : 4,154.73 = 921.62 : x
  2. Step 2: Convert to fraction form
    2,769.29/4,154.73 = 921.62/x
  3. Step 3: Cross multiply
    2,769.29x = 4,154.73 × 921.62
  4. Step 4: Simplify right side
    2,769.29x = 3,829,063.87
  5. Step 5: Solve for x
    x = 3,829,063.87/2,769.29
  6. Step 6: Final answer
    x = 1,382.69

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1.5x scale

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.