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Finding the Fourth Proportional to 7,203.75, 9,941.18 and 3,891.75

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Solution

The fourth proportional to 7,203.75, 9,941.18 and 3,891.75 is: 5,370.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,203.75 : 9,941.18 = 3,891.75 : x
  2. Step 2: Convert to fraction form
    7,203.75/9,941.18 = 3,891.75/x
  3. Step 3: Cross multiply
    7,203.75x = 9,941.18 × 3,891.75
  4. Step 4: Simplify right side
    7,203.75x = 38,688,567.81
  5. Step 5: Solve for x
    x = 38,688,567.81/7,203.75
  6. Step 6: Final answer
    x = 5,370.62

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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.