Home / 1,550.09-2,139.12-851.46

Finding the Fourth Proportional to 1,550.09, 2,139.12 and 851.46

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Solution

The fourth proportional to 1,550.09, 2,139.12 and 851.46 is: 1,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.09 : 2,139.12 = 851.46 : x
  2. Step 2: Convert to fraction form
    1,550.09/2,139.12 = 851.46/x
  3. Step 3: Cross multiply
    1,550.09x = 2,139.12 × 851.46
  4. Step 4: Simplify right side
    1,550.09x = 1,821,375.12
  5. Step 5: Solve for x
    x = 1,821,375.12/1,550.09
  6. Step 6: Final answer
    x = 1,175.02

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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.