Home / 2,831.10-4,245.56-1,531.86

Finding the Fourth Proportional to 2,831.10, 4,245.56 and 1,531.86

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Solution

The fourth proportional to 2,831.10, 4,245.56 and 1,531.86 is: 2,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.10 : 4,245.56 = 1,531.86 : x
  2. Step 2: Convert to fraction form
    2,831.10/4,245.56 = 1,531.86/x
  3. Step 3: Cross multiply
    2,831.10x = 4,245.56 × 1,531.86
  4. Step 4: Simplify right side
    2,831.10x = 6,503,595.88
  5. Step 5: Solve for x
    x = 6,503,595.88/2,831.10
  6. Step 6: Final answer
    x = 2,297.20

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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.