Home / 2,947.23-4,067.07-1,688.19

Finding the Fourth Proportional to 2,947.23, 4,067.07 and 1,688.19

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Solution

The fourth proportional to 2,947.23, 4,067.07 and 1,688.19 is: 2,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.23 : 4,067.07 = 1,688.19 : x
  2. Step 2: Convert to fraction form
    2,947.23/4,067.07 = 1,688.19/x
  3. Step 3: Cross multiply
    2,947.23x = 4,067.07 × 1,688.19
  4. Step 4: Simplify right side
    2,947.23x = 6,865,986.90
  5. Step 5: Solve for x
    x = 6,865,986.90/2,947.23
  6. Step 6: Final answer
    x = 2,329.64

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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.