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Finding the Fourth Proportional to 3,158.75, 4,736.30 and 1,403.75

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Solution

The fourth proportional to 3,158.75, 4,736.30 and 1,403.75 is: 2,104.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.75 : 4,736.30 = 1,403.75 : x
  2. Step 2: Convert to fraction form
    3,158.75/4,736.30 = 1,403.75/x
  3. Step 3: Cross multiply
    3,158.75x = 4,736.30 × 1,403.75
  4. Step 4: Simplify right side
    3,158.75x = 6,648,581.13
  5. Step 5: Solve for x
    x = 6,648,581.13/3,158.75
  6. Step 6: Final answer
    x = 2,104.81

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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.