Home / 2,425.20-3,344.04-1,639.68

Finding the Fourth Proportional to 2,425.20, 3,344.04 and 1,639.68

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Solution

The fourth proportional to 2,425.20, 3,344.04 and 1,639.68 is: 2,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.20 : 3,344.04 = 1,639.68 : x
  2. Step 2: Convert to fraction form
    2,425.20/3,344.04 = 1,639.68/x
  3. Step 3: Cross multiply
    2,425.20x = 3,344.04 × 1,639.68
  4. Step 4: Simplify right side
    2,425.20x = 5,483,155.51
  5. Step 5: Solve for x
    x = 5,483,155.51/2,425.20
  6. Step 6: Final answer
    x = 2,260.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.