Home / 2,947.60-4,067.49-1,688.66

Finding the Fourth Proportional to 2,947.60, 4,067.49 and 1,688.66

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Solution

The fourth proportional to 2,947.60, 4,067.49 and 1,688.66 is: 2,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.60 : 4,067.49 = 1,688.66 : x
  2. Step 2: Convert to fraction form
    2,947.60/4,067.49 = 1,688.66/x
  3. Step 3: Cross multiply
    2,947.60x = 4,067.49 × 1,688.66
  4. Step 4: Simplify right side
    2,947.60x = 6,868,607.66
  5. Step 5: Solve for x
    x = 6,868,607.66/2,947.60
  6. Step 6: Final answer
    x = 2,330.24

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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.