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Finding the Fourth Proportional to 7,863.72, 10,856.94 and 4,883.92

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Solution

The fourth proportional to 7,863.72, 10,856.94 and 4,883.92 is: 6,742.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.72 : 10,856.94 = 4,883.92 : x
  2. Step 2: Convert to fraction form
    7,863.72/10,856.94 = 4,883.92/x
  3. Step 3: Cross multiply
    7,863.72x = 10,856.94 × 4,883.92
  4. Step 4: Simplify right side
    7,863.72x = 53,024,426.40
  5. Step 5: Solve for x
    x = 53,024,426.40/7,863.72
  6. Step 6: Final answer
    x = 6,742.92

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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.