Home / 2,289.20-3,433.80-557.81

Finding the Fourth Proportional to 2,289.20, 3,433.80 and 557.81

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Solution

The fourth proportional to 2,289.20, 3,433.80 and 557.81 is: 836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.20 : 3,433.80 = 557.81 : x
  2. Step 2: Convert to fraction form
    2,289.20/3,433.80 = 557.81/x
  3. Step 3: Cross multiply
    2,289.20x = 3,433.80 × 557.81
  4. Step 4: Simplify right side
    2,289.20x = 1,915,390.81
  5. Step 5: Solve for x
    x = 1,915,390.81/2,289.20
  6. Step 6: Final answer
    x = 836.71

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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.