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Finding the Fourth Proportional to 6,615.81, 9,922.10 and 1,934.60

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Solution

The fourth proportional to 6,615.81, 9,922.10 and 1,934.60 is: 2,901.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.81 : 9,922.10 = 1,934.60 : x
  2. Step 2: Convert to fraction form
    6,615.81/9,922.10 = 1,934.60/x
  3. Step 3: Cross multiply
    6,615.81x = 9,922.10 × 1,934.60
  4. Step 4: Simplify right side
    6,615.81x = 19,195,235.38
  5. Step 5: Solve for x
    x = 19,195,235.38/6,615.81
  6. Step 6: Final answer
    x = 2,901.42

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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.