Home / 2,831.58-4,249.02-1,187.98

Finding the Fourth Proportional to 2,831.58, 4,249.02 and 1,187.98

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Solution

The fourth proportional to 2,831.58, 4,249.02 and 1,187.98 is: 1,782.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.58 : 4,249.02 = 1,187.98 : x
  2. Step 2: Convert to fraction form
    2,831.58/4,249.02 = 1,187.98/x
  3. Step 3: Cross multiply
    2,831.58x = 4,249.02 × 1,187.98
  4. Step 4: Simplify right side
    2,831.58x = 5,047,750.78
  5. Step 5: Solve for x
    x = 5,047,750.78/2,831.58
  6. Step 6: Final answer
    x = 1,782.66

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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.