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Finding the Fourth Proportional to 7,981.62, 11,014.83 and 4,445.16

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Solution

The fourth proportional to 7,981.62, 11,014.83 and 4,445.16 is: 6,134.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.62 : 11,014.83 = 4,445.16 : x
  2. Step 2: Convert to fraction form
    7,981.62/11,014.83 = 4,445.16/x
  3. Step 3: Cross multiply
    7,981.62x = 11,014.83 × 4,445.16
  4. Step 4: Simplify right side
    7,981.62x = 48,962,681.72
  5. Step 5: Solve for x
    x = 48,962,681.72/7,981.62
  6. Step 6: Final answer
    x = 6,134.43

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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.