Home / 8,990.81-13,481.06-3,440.69

Finding the Fourth Proportional to 8,990.81, 13,481.06 and 3,440.69

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Solution

The fourth proportional to 8,990.81, 13,481.06 and 3,440.69 is: 5,159.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.81 : 13,481.06 = 3,440.69 : x
  2. Step 2: Convert to fraction form
    8,990.81/13,481.06 = 3,440.69/x
  3. Step 3: Cross multiply
    8,990.81x = 13,481.06 × 3,440.69
  4. Step 4: Simplify right side
    8,990.81x = 46,384,199.78
  5. Step 5: Solve for x
    x = 46,384,199.78/8,990.81
  6. Step 6: Final answer
    x = 5,159.07

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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.