Home / 2,826.65-4,239.26-1,265.78

Finding the Fourth Proportional to 2,826.65, 4,239.26 and 1,265.78

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Solution

The fourth proportional to 2,826.65, 4,239.26 and 1,265.78 is: 1,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,826.65 : 4,239.26 = 1,265.78 : x
  2. Step 2: Convert to fraction form
    2,826.65/4,239.26 = 1,265.78/x
  3. Step 3: Cross multiply
    2,826.65x = 4,239.26 × 1,265.78
  4. Step 4: Simplify right side
    2,826.65x = 5,365,970.52
  5. Step 5: Solve for x
    x = 5,365,970.52/2,826.65
  6. Step 6: Final answer
    x = 1,898.35

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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.