Home / 3,917.02-5,407.56-2,664.76

Finding the Fourth Proportional to 3,917.02, 5,407.56 and 2,664.76

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Solution

The fourth proportional to 3,917.02, 5,407.56 and 2,664.76 is: 3,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.02 : 5,407.56 = 2,664.76 : x
  2. Step 2: Convert to fraction form
    3,917.02/5,407.56 = 2,664.76/x
  3. Step 3: Cross multiply
    3,917.02x = 5,407.56 × 2,664.76
  4. Step 4: Simplify right side
    3,917.02x = 14,409,849.59
  5. Step 5: Solve for x
    x = 14,409,849.59/3,917.02
  6. Step 6: Final answer
    x = 3,678.78

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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.