Home / 3,115.35-4,296.81-2,206.47

Finding the Fourth Proportional to 3,115.35, 4,296.81 and 2,206.47

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Solution

The fourth proportional to 3,115.35, 4,296.81 and 2,206.47 is: 3,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.35 : 4,296.81 = 2,206.47 : x
  2. Step 2: Convert to fraction form
    3,115.35/4,296.81 = 2,206.47/x
  3. Step 3: Cross multiply
    3,115.35x = 4,296.81 × 2,206.47
  4. Step 4: Simplify right side
    3,115.35x = 9,480,782.36
  5. Step 5: Solve for x
    x = 9,480,782.36/3,115.35
  6. Step 6: Final answer
    x = 3,043.25

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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.