Home / 2,455.78-3,389.01-1,336.75

Finding the Fourth Proportional to 2,455.78, 3,389.01 and 1,336.75

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Solution

The fourth proportional to 2,455.78, 3,389.01 and 1,336.75 is: 1,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.78 : 3,389.01 = 1,336.75 : x
  2. Step 2: Convert to fraction form
    2,455.78/3,389.01 = 1,336.75/x
  3. Step 3: Cross multiply
    2,455.78x = 3,389.01 × 1,336.75
  4. Step 4: Simplify right side
    2,455.78x = 4,530,265.57
  5. Step 5: Solve for x
    x = 4,530,265.57/2,455.78
  6. Step 6: Final answer
    x = 1,844.74

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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.