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Finding the Fourth Proportional to 3,393.14, 4,679.93 and 2,921.85

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Solution

The fourth proportional to 3,393.14, 4,679.93 and 2,921.85 is: 4,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.14 : 4,679.93 = 2,921.85 : x
  2. Step 2: Convert to fraction form
    3,393.14/4,679.93 = 2,921.85/x
  3. Step 3: Cross multiply
    3,393.14x = 4,679.93 × 2,921.85
  4. Step 4: Simplify right side
    3,393.14x = 13,674,053.47
  5. Step 5: Solve for x
    x = 13,674,053.47/3,393.14
  6. Step 6: Final answer
    x = 4,029.91

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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.