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Finding the Fourth Proportional to 2,643.32, 3,965 and 888

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Solution

The fourth proportional to 2,643.32, 3,965 and 888 is: 1,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.32 : 3,965 = 888 : x
  2. Step 2: Convert to fraction form
    2,643.32/3,965 = 888/x
  3. Step 3: Cross multiply
    2,643.32x = 3,965 × 888
  4. Step 4: Simplify right side
    2,643.32x = 3,520,920
  5. Step 5: Solve for x
    x = 3,520,920/2,643.32
  6. Step 6: Final answer
    x = 1,332.01

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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.