Home / 1,949.16-2,689.91-1,203.15

Finding the Fourth Proportional to 1,949.16, 2,689.91 and 1,203.15

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Solution

The fourth proportional to 1,949.16, 2,689.91 and 1,203.15 is: 1,660.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.16 : 2,689.91 = 1,203.15 : x
  2. Step 2: Convert to fraction form
    1,949.16/2,689.91 = 1,203.15/x
  3. Step 3: Cross multiply
    1,949.16x = 2,689.91 × 1,203.15
  4. Step 4: Simplify right side
    1,949.16x = 3,236,365.22
  5. Step 5: Solve for x
    x = 3,236,365.22/1,949.16
  6. Step 6: Final answer
    x = 1,660.39

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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.