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Finding the Fourth Proportional to 6,957.71, 10,434.70 and 1,959.78

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Solution

The fourth proportional to 6,957.71, 10,434.70 and 1,959.78 is: 2,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,957.71 : 10,434.70 = 1,959.78 : x
  2. Step 2: Convert to fraction form
    6,957.71/10,434.70 = 1,959.78/x
  3. Step 3: Cross multiply
    6,957.71x = 10,434.70 × 1,959.78
  4. Step 4: Simplify right side
    6,957.71x = 20,449,716.37
  5. Step 5: Solve for x
    x = 20,449,716.37/6,957.71
  6. Step 6: Final answer
    x = 2,939.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.