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Finding the Fourth Proportional to 7,203.79, 9,941.22 and 3,891.79

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Solution

The fourth proportional to 7,203.79, 9,941.22 and 3,891.79 is: 5,370.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,203.79 : 9,941.22 = 3,891.79 : x
  2. Step 2: Convert to fraction form
    7,203.79/9,941.22 = 3,891.79/x
  3. Step 3: Cross multiply
    7,203.79x = 9,941.22 × 3,891.79
  4. Step 4: Simplify right side
    7,203.79x = 38,689,071.42
  5. Step 5: Solve for x
    x = 38,689,071.42/7,203.79
  6. Step 6: Final answer
    x = 5,370.66

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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.