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Finding the Fourth Proportional to 3,870.92, 5,806.28 and 1,097.52

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Solution

The fourth proportional to 3,870.92, 5,806.28 and 1,097.52 is: 1,646.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.92 : 5,806.28 = 1,097.52 : x
  2. Step 2: Convert to fraction form
    3,870.92/5,806.28 = 1,097.52/x
  3. Step 3: Cross multiply
    3,870.92x = 5,806.28 × 1,097.52
  4. Step 4: Simplify right side
    3,870.92x = 6,372,489.40
  5. Step 5: Solve for x
    x = 6,372,489.40/3,870.92
  6. Step 6: Final answer
    x = 1,646.25

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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.