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Finding the Fourth Proportional to 4,191.75, 5,784.75 and 2,328.75

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Solution

The fourth proportional to 4,191.75, 5,784.75 and 2,328.75 is: 3,213.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,191.75 : 5,784.75 = 2,328.75 : x
  2. Step 2: Convert to fraction form
    4,191.75/5,784.75 = 2,328.75/x
  3. Step 3: Cross multiply
    4,191.75x = 5,784.75 × 2,328.75
  4. Step 4: Simplify right side
    4,191.75x = 13,471,236.56
  5. Step 5: Solve for x
    x = 13,471,236.56/4,191.75
  6. Step 6: Final answer
    x = 3,213.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.