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Finding the Fourth Proportional to 8,960.82, 12,365.57 and 4,981.64

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Solution

The fourth proportional to 8,960.82, 12,365.57 and 4,981.64 is: 6,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.82 : 12,365.57 = 4,981.64 : x
  2. Step 2: Convert to fraction form
    8,960.82/12,365.57 = 4,981.64/x
  3. Step 3: Cross multiply
    8,960.82x = 12,365.57 × 4,981.64
  4. Step 4: Simplify right side
    8,960.82x = 61,600,799.67
  5. Step 5: Solve for x
    x = 61,600,799.67/8,960.82
  6. Step 6: Final answer
    x = 6,874.46

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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.