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Finding the Fourth Proportional to 7,841.35, 11,762.03 and 2,647.15

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Solution

The fourth proportional to 7,841.35, 11,762.03 and 2,647.15 is: 3,970.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.35 : 11,762.03 = 2,647.15 : x
  2. Step 2: Convert to fraction form
    7,841.35/11,762.03 = 2,647.15/x
  3. Step 3: Cross multiply
    7,841.35x = 11,762.03 × 2,647.15
  4. Step 4: Simplify right side
    7,841.35x = 31,135,857.71
  5. Step 5: Solve for x
    x = 31,135,857.71/7,841.35
  6. Step 6: Final answer
    x = 3,970.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.