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Finding the Fourth Proportional to 3,885.66, 5,355.98 and 2,626.32

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Solution

The fourth proportional to 3,885.66, 5,355.98 and 2,626.32 is: 3,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.66 : 5,355.98 = 2,626.32 : x
  2. Step 2: Convert to fraction form
    3,885.66/5,355.98 = 2,626.32/x
  3. Step 3: Cross multiply
    3,885.66x = 5,355.98 × 2,626.32
  4. Step 4: Simplify right side
    3,885.66x = 14,066,517.39
  5. Step 5: Solve for x
    x = 14,066,517.39/3,885.66
  6. Step 6: Final answer
    x = 3,620.11

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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.