Home / 2,439.64-3,366.64-1,391.68

Finding the Fourth Proportional to 2,439.64, 3,366.64 and 1,391.68

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Solution

The fourth proportional to 2,439.64, 3,366.64 and 1,391.68 is: 1,920.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.64 : 3,366.64 = 1,391.68 : x
  2. Step 2: Convert to fraction form
    2,439.64/3,366.64 = 1,391.68/x
  3. Step 3: Cross multiply
    2,439.64x = 3,366.64 × 1,391.68
  4. Step 4: Simplify right side
    2,439.64x = 4,685,285.56
  5. Step 5: Solve for x
    x = 4,685,285.56/2,439.64
  6. Step 6: Final answer
    x = 1,920.48

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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.