Home / 1,550.24-2,139.32-851.60

Finding the Fourth Proportional to 1,550.24, 2,139.32 and 851.60

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Solution

The fourth proportional to 1,550.24, 2,139.32 and 851.60 is: 1,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.24 : 2,139.32 = 851.60 : x
  2. Step 2: Convert to fraction form
    1,550.24/2,139.32 = 851.60/x
  3. Step 3: Cross multiply
    1,550.24x = 2,139.32 × 851.60
  4. Step 4: Simplify right side
    1,550.24x = 1,821,844.91
  5. Step 5: Solve for x
    x = 1,821,844.91/1,550.24
  6. Step 6: Final answer
    x = 1,175.20

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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.