Home / 2,439.45-3,366.47-1,391.58

Finding the Fourth Proportional to 2,439.45, 3,366.47 and 1,391.58

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Solution

The fourth proportional to 2,439.45, 3,366.47 and 1,391.58 is: 1,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.45 : 3,366.47 = 1,391.58 : x
  2. Step 2: Convert to fraction form
    2,439.45/3,366.47 = 1,391.58/x
  3. Step 3: Cross multiply
    2,439.45x = 3,366.47 × 1,391.58
  4. Step 4: Simplify right side
    2,439.45x = 4,684,705.36
  5. Step 5: Solve for x
    x = 4,684,705.36/2,439.45
  6. Step 6: Final answer
    x = 1,920.39

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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.