Home / 2,579.76-3,865.86-1,278.63

Finding the Fourth Proportional to 2,579.76, 3,865.86 and 1,278.63

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Solution

The fourth proportional to 2,579.76, 3,865.86 and 1,278.63 is: 1,916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.76 : 3,865.86 = 1,278.63 : x
  2. Step 2: Convert to fraction form
    2,579.76/3,865.86 = 1,278.63/x
  3. Step 3: Cross multiply
    2,579.76x = 3,865.86 × 1,278.63
  4. Step 4: Simplify right side
    2,579.76x = 4,943,004.57
  5. Step 5: Solve for x
    x = 4,943,004.57/2,579.76
  6. Step 6: Final answer
    x = 1,916.07

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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.