Home / 3,133.15-4,321.78-2,015.54

Finding the Fourth Proportional to 3,133.15, 4,321.78 and 2,015.54

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Solution

The fourth proportional to 3,133.15, 4,321.78 and 2,015.54 is: 2,780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.15 : 4,321.78 = 2,015.54 : x
  2. Step 2: Convert to fraction form
    3,133.15/4,321.78 = 2,015.54/x
  3. Step 3: Cross multiply
    3,133.15x = 4,321.78 × 2,015.54
  4. Step 4: Simplify right side
    3,133.15x = 8,710,720.46
  5. Step 5: Solve for x
    x = 8,710,720.46/3,133.15
  6. Step 6: Final answer
    x = 2,780.18

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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.