Home / 2,478.29-3,717.44-629.40

Finding the Fourth Proportional to 2,478.29, 3,717.44 and 629.40

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Solution

The fourth proportional to 2,478.29, 3,717.44 and 629.40 is: 944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.29 : 3,717.44 = 629.40 : x
  2. Step 2: Convert to fraction form
    2,478.29/3,717.44 = 629.40/x
  3. Step 3: Cross multiply
    2,478.29x = 3,717.44 × 629.40
  4. Step 4: Simplify right side
    2,478.29x = 2,339,753.59
  5. Step 5: Solve for x
    x = 2,339,753.59/2,478.29
  6. Step 6: Final answer
    x = 944.10

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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.