Home / 2,453.22-3,385.15-1,390.91

Finding the Fourth Proportional to 2,453.22, 3,385.15 and 1,390.91

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Solution

The fourth proportional to 2,453.22, 3,385.15 and 1,390.91 is: 1,919.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.22 : 3,385.15 = 1,390.91 : x
  2. Step 2: Convert to fraction form
    2,453.22/3,385.15 = 1,390.91/x
  3. Step 3: Cross multiply
    2,453.22x = 3,385.15 × 1,390.91
  4. Step 4: Simplify right side
    2,453.22x = 4,708,418.58
  5. Step 5: Solve for x
    x = 4,708,418.58/2,453.22
  6. Step 6: Final answer
    x = 1,919.28

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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.