Home / 3,917.36-5,407.78-2,973.62

Finding the Fourth Proportional to 3,917.36, 5,407.78 and 2,973.62

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Solution

The fourth proportional to 3,917.36, 5,407.78 and 2,973.62 is: 4,104.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.36 : 5,407.78 = 2,973.62 : x
  2. Step 2: Convert to fraction form
    3,917.36/5,407.78 = 2,973.62/x
  3. Step 3: Cross multiply
    3,917.36x = 5,407.78 × 2,973.62
  4. Step 4: Simplify right side
    3,917.36x = 16,080,682.76
  5. Step 5: Solve for x
    x = 16,080,682.76/3,917.36
  6. Step 6: Final answer
    x = 4,104.98

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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.