Home / 3,109.80-4,289.38-2,597.36

Finding the Fourth Proportional to 3,109.80, 4,289.38 and 2,597.36

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Solution

The fourth proportional to 3,109.80, 4,289.38 and 2,597.36 is: 3,582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.80 : 4,289.38 = 2,597.36 : x
  2. Step 2: Convert to fraction form
    3,109.80/4,289.38 = 2,597.36/x
  3. Step 3: Cross multiply
    3,109.80x = 4,289.38 × 2,597.36
  4. Step 4: Simplify right side
    3,109.80x = 11,141,064.04
  5. Step 5: Solve for x
    x = 11,141,064.04/3,109.80
  6. Step 6: Final answer
    x = 3,582.57

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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.