Home / 4,988.90-7,464.81-3,131.33

Finding the Fourth Proportional to 4,988.90, 7,464.81 and 3,131.33

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Solution

The fourth proportional to 4,988.90, 7,464.81 and 3,131.33 is: 4,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.90 : 7,464.81 = 3,131.33 : x
  2. Step 2: Convert to fraction form
    4,988.90/7,464.81 = 3,131.33/x
  3. Step 3: Cross multiply
    4,988.90x = 7,464.81 × 3,131.33
  4. Step 4: Simplify right side
    4,988.90x = 23,374,757.92
  5. Step 5: Solve for x
    x = 23,374,757.92/4,988.90
  6. Step 6: Final answer
    x = 4,685.35

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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.