Home / 3,122.40-4,309.34-1,796.07

Finding the Fourth Proportional to 3,122.40, 4,309.34 and 1,796.07

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Solution

The fourth proportional to 3,122.40, 4,309.34 and 1,796.07 is: 2,478.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.40 : 4,309.34 = 1,796.07 : x
  2. Step 2: Convert to fraction form
    3,122.40/4,309.34 = 1,796.07/x
  3. Step 3: Cross multiply
    3,122.40x = 4,309.34 × 1,796.07
  4. Step 4: Simplify right side
    3,122.40x = 7,739,876.29
  5. Step 5: Solve for x
    x = 7,739,876.29/3,122.40
  6. Step 6: Final answer
    x = 2,478.82

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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.