Home / 2,831.48-4,238.32-1,787.87

Finding the Fourth Proportional to 2,831.48, 4,238.32 and 1,787.87

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Solution

The fourth proportional to 2,831.48, 4,238.32 and 1,787.87 is: 2,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.48 : 4,238.32 = 1,787.87 : x
  2. Step 2: Convert to fraction form
    2,831.48/4,238.32 = 1,787.87/x
  3. Step 3: Cross multiply
    2,831.48x = 4,238.32 × 1,787.87
  4. Step 4: Simplify right side
    2,831.48x = 7,577,565.18
  5. Step 5: Solve for x
    x = 7,577,565.18/2,831.48
  6. Step 6: Final answer
    x = 2,676.19

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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.