Home / 2,453.40-3,384.85-1,391.02

Finding the Fourth Proportional to 2,453.40, 3,384.85 and 1,391.02

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Solution

The fourth proportional to 2,453.40, 3,384.85 and 1,391.02 is: 1,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.40 : 3,384.85 = 1,391.02 : x
  2. Step 2: Convert to fraction form
    2,453.40/3,384.85 = 1,391.02/x
  3. Step 3: Cross multiply
    2,453.40x = 3,384.85 × 1,391.02
  4. Step 4: Simplify right side
    2,453.40x = 4,708,394.05
  5. Step 5: Solve for x
    x = 4,708,394.05/2,453.40
  6. Step 6: Final answer
    x = 1,919.13

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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.