Home / 2,769.81-4,154.70-1,125.90

Finding the Fourth Proportional to 2,769.81, 4,154.70 and 1,125.90

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Solution

The fourth proportional to 2,769.81, 4,154.70 and 1,125.90 is: 1,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.81 : 4,154.70 = 1,125.90 : x
  2. Step 2: Convert to fraction form
    2,769.81/4,154.70 = 1,125.90/x
  3. Step 3: Cross multiply
    2,769.81x = 4,154.70 × 1,125.90
  4. Step 4: Simplify right side
    2,769.81x = 4,677,776.73
  5. Step 5: Solve for x
    x = 4,677,776.73/2,769.81
  6. Step 6: Final answer
    x = 1,688.84

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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.