Home / 2,679.20-3,699.25-1,934.81

Finding the Fourth Proportional to 2,679.20, 3,699.25 and 1,934.81

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Solution

The fourth proportional to 2,679.20, 3,699.25 and 1,934.81 is: 2,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.20 : 3,699.25 = 1,934.81 : x
  2. Step 2: Convert to fraction form
    2,679.20/3,699.25 = 1,934.81/x
  3. Step 3: Cross multiply
    2,679.20x = 3,699.25 × 1,934.81
  4. Step 4: Simplify right side
    2,679.20x = 7,157,322.56
  5. Step 5: Solve for x
    x = 7,157,322.56/2,679.20
  6. Step 6: Final answer
    x = 2,671.45

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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.