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Finding the Fourth Proportional to 7,085.54, 9,777.92 and 3,941.66

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Solution

The fourth proportional to 7,085.54, 9,777.92 and 3,941.66 is: 5,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.54 : 9,777.92 = 3,941.66 : x
  2. Step 2: Convert to fraction form
    7,085.54/9,777.92 = 3,941.66/x
  3. Step 3: Cross multiply
    7,085.54x = 9,777.92 × 3,941.66
  4. Step 4: Simplify right side
    7,085.54x = 38,541,236.15
  5. Step 5: Solve for x
    x = 38,541,236.15/7,085.54
  6. Step 6: Final answer
    x = 5,439.42

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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.