Home / 2,439.21-3,366.23-1,391.25

Finding the Fourth Proportional to 2,439.21, 3,366.23 and 1,391.25

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Solution

The fourth proportional to 2,439.21, 3,366.23 and 1,391.25 is: 1,919.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.21 : 3,366.23 = 1,391.25 : x
  2. Step 2: Convert to fraction form
    2,439.21/3,366.23 = 1,391.25/x
  3. Step 3: Cross multiply
    2,439.21x = 3,366.23 × 1,391.25
  4. Step 4: Simplify right side
    2,439.21x = 4,683,260.53
  5. Step 5: Solve for x
    x = 4,683,260.53/2,439.21
  6. Step 6: Final answer
    x = 1,919.99

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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.