Home / 3,910.02-5,395.86-2,141.79

Finding the Fourth Proportional to 3,910.02, 5,395.86 and 2,141.79

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Solution

The fourth proportional to 3,910.02, 5,395.86 and 2,141.79 is: 2,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.02 : 5,395.86 = 2,141.79 : x
  2. Step 2: Convert to fraction form
    3,910.02/5,395.86 = 2,141.79/x
  3. Step 3: Cross multiply
    3,910.02x = 5,395.86 × 2,141.79
  4. Step 4: Simplify right side
    3,910.02x = 11,556,798.99
  5. Step 5: Solve for x
    x = 11,556,798.99/3,910.02
  6. Step 6: Final answer
    x = 2,955.69

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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.