Home / 2,859.89-4,289.83-1,215.28

Finding the Fourth Proportional to 2,859.89, 4,289.83 and 1,215.28

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Solution

The fourth proportional to 2,859.89, 4,289.83 and 1,215.28 is: 1,822.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.89 : 4,289.83 = 1,215.28 : x
  2. Step 2: Convert to fraction form
    2,859.89/4,289.83 = 1,215.28/x
  3. Step 3: Cross multiply
    2,859.89x = 4,289.83 × 1,215.28
  4. Step 4: Simplify right side
    2,859.89x = 5,213,346.93
  5. Step 5: Solve for x
    x = 5,213,346.93/2,859.89
  6. Step 6: Final answer
    x = 1,822.92

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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.