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Finding the Fourth Proportional to 7,873.92, 10,871.52 and 4,890.96

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Solution

The fourth proportional to 7,873.92, 10,871.52 and 4,890.96 is: 6,752.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.92 : 10,871.52 = 4,890.96 : x
  2. Step 2: Convert to fraction form
    7,873.92/10,871.52 = 4,890.96/x
  3. Step 3: Cross multiply
    7,873.92x = 10,871.52 × 4,890.96
  4. Step 4: Simplify right side
    7,873.92x = 53,172,169.46
  5. Step 5: Solve for x
    x = 53,172,169.46/7,873.92
  6. Step 6: Final answer
    x = 6,752.95

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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.