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Finding the Fourth Proportional to 8,981.93, 12,396.65 and 5,627.62

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Solution

The fourth proportional to 8,981.93, 12,396.65 and 5,627.62 is: 7,767.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.93 : 12,396.65 = 5,627.62 : x
  2. Step 2: Convert to fraction form
    8,981.93/12,396.65 = 5,627.62/x
  3. Step 3: Cross multiply
    8,981.93x = 12,396.65 × 5,627.62
  4. Step 4: Simplify right side
    8,981.93x = 69,763,635.47
  5. Step 5: Solve for x
    x = 69,763,635.47/8,981.93
  6. Step 6: Final answer
    x = 7,767.11

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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.