Home / 3,889.20-5,831.66-2,658

Finding the Fourth Proportional to 3,889.20, 5,831.66 and 2,658

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Solution

The fourth proportional to 3,889.20, 5,831.66 and 2,658 is: 3,985.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.20 : 5,831.66 = 2,658 : x
  2. Step 2: Convert to fraction form
    3,889.20/5,831.66 = 2,658/x
  3. Step 3: Cross multiply
    3,889.20x = 5,831.66 × 2,658
  4. Step 4: Simplify right side
    3,889.20x = 15,500,538.99
  5. Step 5: Solve for x
    x = 15,500,538.99/3,889.20
  6. Step 6: Final answer
    x = 3,985.53

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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.