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Finding the Fourth Proportional to 2,208.52, 3,313.17 and 909.28

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Solution

The fourth proportional to 2,208.52, 3,313.17 and 909.28 is: 1,364.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.52 : 3,313.17 = 909.28 : x
  2. Step 2: Convert to fraction form
    2,208.52/3,313.17 = 909.28/x
  3. Step 3: Cross multiply
    2,208.52x = 3,313.17 × 909.28
  4. Step 4: Simplify right side
    2,208.52x = 3,012,584.92
  5. Step 5: Solve for x
    x = 3,012,584.92/2,208.52
  6. Step 6: Final answer
    x = 1,364.08

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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.