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Finding the Fourth Proportional to 2,289.26, 3,433.63 and 645.87

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Solution

The fourth proportional to 2,289.26, 3,433.63 and 645.87 is: 968.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.26 : 3,433.63 = 645.87 : x
  2. Step 2: Convert to fraction form
    2,289.26/3,433.63 = 645.87/x
  3. Step 3: Cross multiply
    2,289.26x = 3,433.63 × 645.87
  4. Step 4: Simplify right side
    2,289.26x = 2,217,678.61
  5. Step 5: Solve for x
    x = 2,217,678.61/2,289.26
  6. Step 6: Final answer
    x = 968.73

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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.