Home / 3,917.83-5,406.66-2,149.40

Finding the Fourth Proportional to 3,917.83, 5,406.66 and 2,149.40

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Solution

The fourth proportional to 3,917.83, 5,406.66 and 2,149.40 is: 2,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.83 : 5,406.66 = 2,149.40 : x
  2. Step 2: Convert to fraction form
    3,917.83/5,406.66 = 2,149.40/x
  3. Step 3: Cross multiply
    3,917.83x = 5,406.66 × 2,149.40
  4. Step 4: Simplify right side
    3,917.83x = 11,621,075.00
  5. Step 5: Solve for x
    x = 11,621,075.00/3,917.83
  6. Step 6: Final answer
    x = 2,966.20

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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.