Home / 3,208.24-4,812.95-987.03

Finding the Fourth Proportional to 3,208.24, 4,812.95 and 987.03

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Solution

The fourth proportional to 3,208.24, 4,812.95 and 987.03 is: 1,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.24 : 4,812.95 = 987.03 : x
  2. Step 2: Convert to fraction form
    3,208.24/4,812.95 = 987.03/x
  3. Step 3: Cross multiply
    3,208.24x = 4,812.95 × 987.03
  4. Step 4: Simplify right side
    3,208.24x = 4,750,526.04
  5. Step 5: Solve for x
    x = 4,750,526.04/3,208.24
  6. Step 6: Final answer
    x = 1,480.73

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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.