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Finding the Fourth Proportional to 8,423.87, 11,625.03 and 4,647.20

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Solution

The fourth proportional to 8,423.87, 11,625.03 and 4,647.20 is: 6,413.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.87 : 11,625.03 = 4,647.20 : x
  2. Step 2: Convert to fraction form
    8,423.87/11,625.03 = 4,647.20/x
  3. Step 3: Cross multiply
    8,423.87x = 11,625.03 × 4,647.20
  4. Step 4: Simplify right side
    8,423.87x = 54,023,781.29
  5. Step 5: Solve for x
    x = 54,023,781.29/8,423.87
  6. Step 6: Final answer
    x = 6,413.18

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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.