Home / 3,639.52-5,456.88-2,988.64

Finding the Fourth Proportional to 3,639.52, 5,456.88 and 2,988.64

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Solution

The fourth proportional to 3,639.52, 5,456.88 and 2,988.64 is: 4,480.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.52 : 5,456.88 = 2,988.64 : x
  2. Step 2: Convert to fraction form
    3,639.52/5,456.88 = 2,988.64/x
  3. Step 3: Cross multiply
    3,639.52x = 5,456.88 × 2,988.64
  4. Step 4: Simplify right side
    3,639.52x = 16,308,649.84
  5. Step 5: Solve for x
    x = 16,308,649.84/3,639.52
  6. Step 6: Final answer
    x = 4,480.99

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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.