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Finding the Fourth Proportional to 7,083.96, 9,776.12 and 3,940.35

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Solution

The fourth proportional to 7,083.96, 9,776.12 and 3,940.35 is: 5,437.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,083.96 : 9,776.12 = 3,940.35 : x
  2. Step 2: Convert to fraction form
    7,083.96/9,776.12 = 3,940.35/x
  3. Step 3: Cross multiply
    7,083.96x = 9,776.12 × 3,940.35
  4. Step 4: Simplify right side
    7,083.96x = 38,521,334.44
  5. Step 5: Solve for x
    x = 38,521,334.44/7,083.96
  6. Step 6: Final answer
    x = 5,437.82

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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.