Home / 8,988.84-13,485.09-3,149.55

Finding the Fourth Proportional to 8,988.84, 13,485.09 and 3,149.55

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Solution

The fourth proportional to 8,988.84, 13,485.09 and 3,149.55 is: 4,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.84 : 13,485.09 = 3,149.55 : x
  2. Step 2: Convert to fraction form
    8,988.84/13,485.09 = 3,149.55/x
  3. Step 3: Cross multiply
    8,988.84x = 13,485.09 × 3,149.55
  4. Step 4: Simplify right side
    8,988.84x = 42,471,965.21
  5. Step 5: Solve for x
    x = 42,471,965.21/8,988.84
  6. Step 6: Final answer
    x = 4,724.97

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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.