Home / 7,409.85-11,115.36-2,479.51

Finding the Fourth Proportional to 7,409.85, 11,115.36 and 2,479.51

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Solution

The fourth proportional to 7,409.85, 11,115.36 and 2,479.51 is: 3,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.85 : 11,115.36 = 2,479.51 : x
  2. Step 2: Convert to fraction form
    7,409.85/11,115.36 = 2,479.51/x
  3. Step 3: Cross multiply
    7,409.85x = 11,115.36 × 2,479.51
  4. Step 4: Simplify right side
    7,409.85x = 27,560,612.29
  5. Step 5: Solve for x
    x = 27,560,612.29/7,409.85
  6. Step 6: Final answer
    x = 3,719.46

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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.