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Finding the Fourth Proportional to 6,378.15, 8,801.62 and 3,545.65

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Solution

The fourth proportional to 6,378.15, 8,801.62 and 3,545.65 is: 4,892.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.15 : 8,801.62 = 3,545.65 : x
  2. Step 2: Convert to fraction form
    6,378.15/8,801.62 = 3,545.65/x
  3. Step 3: Cross multiply
    6,378.15x = 8,801.62 × 3,545.65
  4. Step 4: Simplify right side
    6,378.15x = 31,207,433.08
  5. Step 5: Solve for x
    x = 31,207,433.08/6,378.15
  6. Step 6: Final answer
    x = 4,892.87

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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.