Home / 3,785.38-5,677.81-1,812.40

Finding the Fourth Proportional to 3,785.38, 5,677.81 and 1,812.40

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Solution

The fourth proportional to 3,785.38, 5,677.81 and 1,812.40 is: 2,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.38 : 5,677.81 = 1,812.40 : x
  2. Step 2: Convert to fraction form
    3,785.38/5,677.81 = 1,812.40/x
  3. Step 3: Cross multiply
    3,785.38x = 5,677.81 × 1,812.40
  4. Step 4: Simplify right side
    3,785.38x = 10,290,444.12
  5. Step 5: Solve for x
    x = 10,290,444.12/3,785.38
  6. Step 6: Final answer
    x = 2,718.47

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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.