Home / 3,917.07-5,405.52-2,148.63

Finding the Fourth Proportional to 3,917.07, 5,405.52 and 2,148.63

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Solution

The fourth proportional to 3,917.07, 5,405.52 and 2,148.63 is: 2,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.07 : 5,405.52 = 2,148.63 : x
  2. Step 2: Convert to fraction form
    3,917.07/5,405.52 = 2,148.63/x
  3. Step 3: Cross multiply
    3,917.07x = 5,405.52 × 2,148.63
  4. Step 4: Simplify right side
    3,917.07x = 11,614,462.44
  5. Step 5: Solve for x
    x = 11,614,462.44/3,917.07
  6. Step 6: Final answer
    x = 2,965.09

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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.