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Finding the Fourth Proportional to 6,120.70, 9,178.71 and 1,959.82

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Solution

The fourth proportional to 6,120.70, 9,178.71 and 1,959.82 is: 2,938.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120.70 : 9,178.71 = 1,959.82 : x
  2. Step 2: Convert to fraction form
    6,120.70/9,178.71 = 1,959.82/x
  3. Step 3: Cross multiply
    6,120.70x = 9,178.71 × 1,959.82
  4. Step 4: Simplify right side
    6,120.70x = 17,988,619.43
  5. Step 5: Solve for x
    x = 17,988,619.43/6,120.70
  6. Step 6: Final answer
    x = 2,938.98

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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.