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Finding the Fourth Proportional to 6,965.71, 9,610.99 and 3,940.89

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Solution

The fourth proportional to 6,965.71, 9,610.99 and 3,940.89 is: 5,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,965.71 : 9,610.99 = 3,940.89 : x
  2. Step 2: Convert to fraction form
    6,965.71/9,610.99 = 3,940.89/x
  3. Step 3: Cross multiply
    6,965.71x = 9,610.99 × 3,940.89
  4. Step 4: Simplify right side
    6,965.71x = 37,875,854.38
  5. Step 5: Solve for x
    x = 37,875,854.38/6,965.71
  6. Step 6: Final answer
    x = 5,437.47

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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.