Home / 2,809.31-3,876.85-1,550.37

Finding the Fourth Proportional to 2,809.31, 3,876.85 and 1,550.37

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Solution

The fourth proportional to 2,809.31, 3,876.85 and 1,550.37 is: 2,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.31 : 3,876.85 = 1,550.37 : x
  2. Step 2: Convert to fraction form
    2,809.31/3,876.85 = 1,550.37/x
  3. Step 3: Cross multiply
    2,809.31x = 3,876.85 × 1,550.37
  4. Step 4: Simplify right side
    2,809.31x = 6,010,533.16
  5. Step 5: Solve for x
    x = 6,010,533.16/2,809.31
  6. Step 6: Final answer
    x = 2,139.50

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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.