Home / 2,669.55-3,685.80-2,112.74

Finding the Fourth Proportional to 2,669.55, 3,685.80 and 2,112.74

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Solution

The fourth proportional to 2,669.55, 3,685.80 and 2,112.74 is: 2,917.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.55 : 3,685.80 = 2,112.74 : x
  2. Step 2: Convert to fraction form
    2,669.55/3,685.80 = 2,112.74/x
  3. Step 3: Cross multiply
    2,669.55x = 3,685.80 × 2,112.74
  4. Step 4: Simplify right side
    2,669.55x = 7,787,137.09
  5. Step 5: Solve for x
    x = 7,787,137.09/2,669.55
  6. Step 6: Final answer
    x = 2,917.02

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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.