Home / 1,550.13-2,139.26-851.52

Finding the Fourth Proportional to 1,550.13, 2,139.26 and 851.52

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Solution

The fourth proportional to 1,550.13, 2,139.26 and 851.52 is: 1,175.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550.13 : 2,139.26 = 851.52 : x
  2. Step 2: Convert to fraction form
    1,550.13/2,139.26 = 851.52/x
  3. Step 3: Cross multiply
    1,550.13x = 2,139.26 × 851.52
  4. Step 4: Simplify right side
    1,550.13x = 1,821,618.42
  5. Step 5: Solve for x
    x = 1,821,618.42/1,550.13
  6. Step 6: Final answer
    x = 1,175.14

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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.