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Finding the Fourth Proportional to 3,630.88, 5,011.14 and 2,639.44

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Solution

The fourth proportional to 3,630.88, 5,011.14 and 2,639.44 is: 3,642.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.88 : 5,011.14 = 2,639.44 : x
  2. Step 2: Convert to fraction form
    3,630.88/5,011.14 = 2,639.44/x
  3. Step 3: Cross multiply
    3,630.88x = 5,011.14 × 2,639.44
  4. Step 4: Simplify right side
    3,630.88x = 13,226,603.36
  5. Step 5: Solve for x
    x = 13,226,603.36/3,630.88
  6. Step 6: Final answer
    x = 3,642.81

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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.