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Finding the Fourth Proportional to 2,391.35, 3,584.97 and 909.75

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Solution

The fourth proportional to 2,391.35, 3,584.97 and 909.75 is: 1,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.35 : 3,584.97 = 909.75 : x
  2. Step 2: Convert to fraction form
    2,391.35/3,584.97 = 909.75/x
  3. Step 3: Cross multiply
    2,391.35x = 3,584.97 × 909.75
  4. Step 4: Simplify right side
    2,391.35x = 3,261,421.91
  5. Step 5: Solve for x
    x = 3,261,421.91/2,391.35
  6. Step 6: Final answer
    x = 1,363.84

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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.