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Finding the Fourth Proportional to 7,865.91, 10,854.99 and 4,508.92

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Solution

The fourth proportional to 7,865.91, 10,854.99 and 4,508.92 is: 6,222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.91 : 10,854.99 = 4,508.92 : x
  2. Step 2: Convert to fraction form
    7,865.91/10,854.99 = 4,508.92/x
  3. Step 3: Cross multiply
    7,865.91x = 10,854.99 × 4,508.92
  4. Step 4: Simplify right side
    7,865.91x = 48,944,254.37
  5. Step 5: Solve for x
    x = 48,944,254.37/7,865.91
  6. Step 6: Final answer
    x = 6,222.33

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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.