Home / 2,420.43-3,628.19-1,640.51

Finding the Fourth Proportional to 2,420.43, 3,628.19 and 1,640.51

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Solution

The fourth proportional to 2,420.43, 3,628.19 and 1,640.51 is: 2,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.43 : 3,628.19 = 1,640.51 : x
  2. Step 2: Convert to fraction form
    2,420.43/3,628.19 = 1,640.51/x
  3. Step 3: Cross multiply
    2,420.43x = 3,628.19 × 1,640.51
  4. Step 4: Simplify right side
    2,420.43x = 5,952,081.98
  5. Step 5: Solve for x
    x = 5,952,081.98/2,420.43
  6. Step 6: Final answer
    x = 2,459.10

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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.