Home / 2,005.23-3,009.51-851.79

Finding the Fourth Proportional to 2,005.23, 3,009.51 and 851.79

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Solution

The fourth proportional to 2,005.23, 3,009.51 and 851.79 is: 1,278.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.23 : 3,009.51 = 851.79 : x
  2. Step 2: Convert to fraction form
    2,005.23/3,009.51 = 851.79/x
  3. Step 3: Cross multiply
    2,005.23x = 3,009.51 × 851.79
  4. Step 4: Simplify right side
    2,005.23x = 2,563,470.52
  5. Step 5: Solve for x
    x = 2,563,470.52/2,005.23
  6. Step 6: Final answer
    x = 1,278.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.