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Finding the Fourth Proportional to 4,869.92, 7,291.92 and 3,805.12

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Solution

The fourth proportional to 4,869.92, 7,291.92 and 3,805.12 is: 5,697.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.92 : 7,291.92 = 3,805.12 : x
  2. Step 2: Convert to fraction form
    4,869.92/7,291.92 = 3,805.12/x
  3. Step 3: Cross multiply
    4,869.92x = 7,291.92 × 3,805.12
  4. Step 4: Simplify right side
    4,869.92x = 27,746,630.63
  5. Step 5: Solve for x
    x = 27,746,630.63/4,869.92
  6. Step 6: Final answer
    x = 5,697.55

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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.