Home / 2,831.62-4,243.08-1,187.26

Finding the Fourth Proportional to 2,831.62, 4,243.08 and 1,187.26

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Solution

The fourth proportional to 2,831.62, 4,243.08 and 1,187.26 is: 1,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.62 : 4,243.08 = 1,187.26 : x
  2. Step 2: Convert to fraction form
    2,831.62/4,243.08 = 1,187.26/x
  3. Step 3: Cross multiply
    2,831.62x = 4,243.08 × 1,187.26
  4. Step 4: Simplify right side
    2,831.62x = 5,037,639.16
  5. Step 5: Solve for x
    x = 5,037,639.16/2,831.62
  6. Step 6: Final answer
    x = 1,779.07

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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.