Home / 2,478.63-3,717.66-629.75

Finding the Fourth Proportional to 2,478.63, 3,717.66 and 629.75

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Solution

The fourth proportional to 2,478.63, 3,717.66 and 629.75 is: 944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.63 : 3,717.66 = 629.75 : x
  2. Step 2: Convert to fraction form
    2,478.63/3,717.66 = 629.75/x
  3. Step 3: Cross multiply
    2,478.63x = 3,717.66 × 629.75
  4. Step 4: Simplify right side
    2,478.63x = 2,341,177.80
  5. Step 5: Solve for x
    x = 2,341,177.80/2,478.63
  6. Step 6: Final answer
    x = 944.55

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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.