Home / 3,468.90-4,785.40-2,142.12

Finding the Fourth Proportional to 3,468.90, 4,785.40 and 2,142.12

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Solution

The fourth proportional to 3,468.90, 4,785.40 and 2,142.12 is: 2,955.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.90 : 4,785.40 = 2,142.12 : x
  2. Step 2: Convert to fraction form
    3,468.90/4,785.40 = 2,142.12/x
  3. Step 3: Cross multiply
    3,468.90x = 4,785.40 × 2,142.12
  4. Step 4: Simplify right side
    3,468.90x = 10,250,901.05
  5. Step 5: Solve for x
    x = 10,250,901.05/3,468.90
  6. Step 6: Final answer
    x = 2,955.09

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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.