Home / 3,312.50-4,969.24-1,120.49

Finding the Fourth Proportional to 3,312.50, 4,969.24 and 1,120.49

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Solution

The fourth proportional to 3,312.50, 4,969.24 and 1,120.49 is: 1,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.50 : 4,969.24 = 1,120.49 : x
  2. Step 2: Convert to fraction form
    3,312.50/4,969.24 = 1,120.49/x
  3. Step 3: Cross multiply
    3,312.50x = 4,969.24 × 1,120.49
  4. Step 4: Simplify right side
    3,312.50x = 5,567,991.84
  5. Step 5: Solve for x
    x = 5,567,991.84/3,312.50
  6. Step 6: Final answer
    x = 1,680.90

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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.