Home / 2,955.21-4,078.64-2,245.90

Finding the Fourth Proportional to 2,955.21, 4,078.64 and 2,245.90

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Solution

The fourth proportional to 2,955.21, 4,078.64 and 2,245.90 is: 3,099.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.21 : 4,078.64 = 2,245.90 : x
  2. Step 2: Convert to fraction form
    2,955.21/4,078.64 = 2,245.90/x
  3. Step 3: Cross multiply
    2,955.21x = 4,078.64 × 2,245.90
  4. Step 4: Simplify right side
    2,955.21x = 9,160,217.58
  5. Step 5: Solve for x
    x = 9,160,217.58/2,955.21
  6. Step 6: Final answer
    x = 3,099.68

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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.