Home / 2,947.08-4,066.91-1,620.81

Finding the Fourth Proportional to 2,947.08, 4,066.91 and 1,620.81

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Solution

The fourth proportional to 2,947.08, 4,066.91 and 1,620.81 is: 2,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.08 : 4,066.91 = 1,620.81 : x
  2. Step 2: Convert to fraction form
    2,947.08/4,066.91 = 1,620.81/x
  3. Step 3: Cross multiply
    2,947.08x = 4,066.91 × 1,620.81
  4. Step 4: Simplify right side
    2,947.08x = 6,591,686.37
  5. Step 5: Solve for x
    x = 6,591,686.37/2,947.08
  6. Step 6: Final answer
    x = 2,236.68

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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.