Home / 2,439.10-3,365.71-1,391.16

Finding the Fourth Proportional to 2,439.10, 3,365.71 and 1,391.16

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Solution

The fourth proportional to 2,439.10, 3,365.71 and 1,391.16 is: 1,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.10 : 3,365.71 = 1,391.16 : x
  2. Step 2: Convert to fraction form
    2,439.10/3,365.71 = 1,391.16/x
  3. Step 3: Cross multiply
    2,439.10x = 3,365.71 × 1,391.16
  4. Step 4: Simplify right side
    2,439.10x = 4,682,241.12
  5. Step 5: Solve for x
    x = 4,682,241.12/2,439.10
  6. Step 6: Final answer
    x = 1,919.66

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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.