Home / 2,859.20-4,289.24-1,215.75

Finding the Fourth Proportional to 2,859.20, 4,289.24 and 1,215.75

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Solution

The fourth proportional to 2,859.20, 4,289.24 and 1,215.75 is: 1,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.20 : 4,289.24 = 1,215.75 : x
  2. Step 2: Convert to fraction form
    2,859.20/4,289.24 = 1,215.75/x
  3. Step 3: Cross multiply
    2,859.20x = 4,289.24 × 1,215.75
  4. Step 4: Simplify right side
    2,859.20x = 5,214,643.53
  5. Step 5: Solve for x
    x = 5,214,643.53/2,859.20
  6. Step 6: Final answer
    x = 1,823.81

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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.