Home / 7,355.12-11,031.20-3,605.30

Finding the Fourth Proportional to 7,355.12, 11,031.20 and 3,605.30

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Solution

The fourth proportional to 7,355.12, 11,031.20 and 3,605.30 is: 5,407.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,355.12 : 11,031.20 = 3,605.30 : x
  2. Step 2: Convert to fraction form
    7,355.12/11,031.20 = 3,605.30/x
  3. Step 3: Cross multiply
    7,355.12x = 11,031.20 × 3,605.30
  4. Step 4: Simplify right side
    7,355.12x = 39,770,785.36
  5. Step 5: Solve for x
    x = 39,770,785.36/7,355.12
  6. Step 6: Final answer
    x = 5,407.22

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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.