Home / 10,581.18-15,871.80-3,185.68

Finding the Fourth Proportional to 10,581.18, 15,871.80 and 3,185.68

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Solution

The fourth proportional to 10,581.18, 15,871.80 and 3,185.68 is: 4,778.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.18 : 15,871.80 = 3,185.68 : x
  2. Step 2: Convert to fraction form
    10,581.18/15,871.80 = 3,185.68/x
  3. Step 3: Cross multiply
    10,581.18x = 15,871.80 × 3,185.68
  4. Step 4: Simplify right side
    10,581.18x = 50,562,475.82
  5. Step 5: Solve for x
    x = 50,562,475.82/10,581.18
  6. Step 6: Final answer
    x = 4,778.53

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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.