Home / 2,478.40-3,717.59-629.51

Finding the Fourth Proportional to 2,478.40, 3,717.59 and 629.51

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Solution

The fourth proportional to 2,478.40, 3,717.59 and 629.51 is: 944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.40 : 3,717.59 = 629.51 : x
  2. Step 2: Convert to fraction form
    2,478.40/3,717.59 = 629.51/x
  3. Step 3: Cross multiply
    2,478.40x = 3,717.59 × 629.51
  4. Step 4: Simplify right side
    2,478.40x = 2,340,260.08
  5. Step 5: Solve for x
    x = 2,340,260.08/2,478.40
  6. Step 6: Final answer
    x = 944.26

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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.