Home / 2,858.28-3,951.78-2,197.32

Finding the Fourth Proportional to 2,858.28, 3,951.78 and 2,197.32

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Solution

The fourth proportional to 2,858.28, 3,951.78 and 2,197.32 is: 3,037.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.28 : 3,951.78 = 2,197.32 : x
  2. Step 2: Convert to fraction form
    2,858.28/3,951.78 = 2,197.32/x
  3. Step 3: Cross multiply
    2,858.28x = 3,951.78 × 2,197.32
  4. Step 4: Simplify right side
    2,858.28x = 8,683,325.23
  5. Step 5: Solve for x
    x = 8,683,325.23/2,858.28
  6. Step 6: Final answer
    x = 3,037.95

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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.