Home / 2,775.86-3,831.30-1,892

Finding the Fourth Proportional to 2,775.86, 3,831.30 and 1,892

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Solution

The fourth proportional to 2,775.86, 3,831.30 and 1,892 is: 2,611.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.86 : 3,831.30 = 1,892 : x
  2. Step 2: Convert to fraction form
    2,775.86/3,831.30 = 1,892/x
  3. Step 3: Cross multiply
    2,775.86x = 3,831.30 × 1,892
  4. Step 4: Simplify right side
    2,775.86x = 7,248,819.60
  5. Step 5: Solve for x
    x = 7,248,819.60/2,775.86
  6. Step 6: Final answer
    x = 2,611.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.