Home / 2,478.16-3,709.56-1,959.76

Finding the Fourth Proportional to 2,478.16, 3,709.56 and 1,959.76

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Solution

The fourth proportional to 2,478.16, 3,709.56 and 1,959.76 is: 2,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.16 : 3,709.56 = 1,959.76 : x
  2. Step 2: Convert to fraction form
    2,478.16/3,709.56 = 1,959.76/x
  3. Step 3: Cross multiply
    2,478.16x = 3,709.56 × 1,959.76
  4. Step 4: Simplify right side
    2,478.16x = 7,269,847.31
  5. Step 5: Solve for x
    x = 7,269,847.31/2,478.16
  6. Step 6: Final answer
    x = 2,933.57

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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.