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Finding the Fourth Proportional to 7,045.74, 9,723.78 and 3,902.94

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Solution

The fourth proportional to 7,045.74, 9,723.78 and 3,902.94 is: 5,386.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.74 : 9,723.78 = 3,902.94 : x
  2. Step 2: Convert to fraction form
    7,045.74/9,723.78 = 3,902.94/x
  3. Step 3: Cross multiply
    7,045.74x = 9,723.78 × 3,902.94
  4. Step 4: Simplify right side
    7,045.74x = 37,951,329.91
  5. Step 5: Solve for x
    x = 37,951,329.91/7,045.74
  6. Step 6: Final answer
    x = 5,386.42

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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.