Home / 2,461.39-3,396.63-1,399.21

Finding the Fourth Proportional to 2,461.39, 3,396.63 and 1,399.21

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Solution

The fourth proportional to 2,461.39, 3,396.63 and 1,399.21 is: 1,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,461.39 : 3,396.63 = 1,399.21 : x
  2. Step 2: Convert to fraction form
    2,461.39/3,396.63 = 1,399.21/x
  3. Step 3: Cross multiply
    2,461.39x = 3,396.63 × 1,399.21
  4. Step 4: Simplify right side
    2,461.39x = 4,752,598.66
  5. Step 5: Solve for x
    x = 4,752,598.66/2,461.39
  6. Step 6: Final answer
    x = 1,930.86

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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.