Home / 2,455.36-3,387.62-1,392.94

Finding the Fourth Proportional to 2,455.36, 3,387.62 and 1,392.94

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Solution

The fourth proportional to 2,455.36, 3,387.62 and 1,392.94 is: 1,921.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.36 : 3,387.62 = 1,392.94 : x
  2. Step 2: Convert to fraction form
    2,455.36/3,387.62 = 1,392.94/x
  3. Step 3: Cross multiply
    2,455.36x = 3,387.62 × 1,392.94
  4. Step 4: Simplify right side
    2,455.36x = 4,718,751.40
  5. Step 5: Solve for x
    x = 4,718,751.40/2,455.36
  6. Step 6: Final answer
    x = 1,921.82

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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.