Home / 2,947.47-4,067.54-1,621.19

Finding the Fourth Proportional to 2,947.47, 4,067.54 and 1,621.19

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Solution

The fourth proportional to 2,947.47, 4,067.54 and 1,621.19 is: 2,237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.47 : 4,067.54 = 1,621.19 : x
  2. Step 2: Convert to fraction form
    2,947.47/4,067.54 = 1,621.19/x
  3. Step 3: Cross multiply
    2,947.47x = 4,067.54 × 1,621.19
  4. Step 4: Simplify right side
    2,947.47x = 6,594,232.81
  5. Step 5: Solve for x
    x = 6,594,232.81/2,947.47
  6. Step 6: Final answer
    x = 2,237.25

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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.