Home / 1,831.87-2,748.80-1,215.87

Finding the Fourth Proportional to 1,831.87, 2,748.80 and 1,215.87

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Solution

The fourth proportional to 1,831.87, 2,748.80 and 1,215.87 is: 1,824.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.87 : 2,748.80 = 1,215.87 : x
  2. Step 2: Convert to fraction form
    1,831.87/2,748.80 = 1,215.87/x
  3. Step 3: Cross multiply
    1,831.87x = 2,748.80 × 1,215.87
  4. Step 4: Simplify right side
    1,831.87x = 3,342,183.46
  5. Step 5: Solve for x
    x = 3,342,183.46/1,831.87
  6. Step 6: Final answer
    x = 1,824.47

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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.