Home / 2,478.64-3,717.81-629.77

Finding the Fourth Proportional to 2,478.64, 3,717.81 and 629.77

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Solution

The fourth proportional to 2,478.64, 3,717.81 and 629.77 is: 944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.64 : 3,717.81 = 629.77 : x
  2. Step 2: Convert to fraction form
    2,478.64/3,717.81 = 629.77/x
  3. Step 3: Cross multiply
    2,478.64x = 3,717.81 × 629.77
  4. Step 4: Simplify right side
    2,478.64x = 2,341,365.20
  5. Step 5: Solve for x
    x = 2,341,365.20/2,478.64
  6. Step 6: Final answer
    x = 944.62

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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.