Home / 3,009.20-4,148.96-1,945.13

Finding the Fourth Proportional to 3,009.20, 4,148.96 and 1,945.13

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Solution

The fourth proportional to 3,009.20, 4,148.96 and 1,945.13 is: 2,681.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.20 : 4,148.96 = 1,945.13 : x
  2. Step 2: Convert to fraction form
    3,009.20/4,148.96 = 1,945.13/x
  3. Step 3: Cross multiply
    3,009.20x = 4,148.96 × 1,945.13
  4. Step 4: Simplify right side
    3,009.20x = 8,070,236.09
  5. Step 5: Solve for x
    x = 8,070,236.09/3,009.20
  6. Step 6: Final answer
    x = 2,681.86

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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.