Home / 4,101.60-6,142.80-3,122.40

Finding the Fourth Proportional to 4,101.60, 6,142.80 and 3,122.40

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Solution

The fourth proportional to 4,101.60, 6,142.80 and 3,122.40 is: 4,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,101.60 : 6,142.80 = 3,122.40 : x
  2. Step 2: Convert to fraction form
    4,101.60/6,142.80 = 3,122.40/x
  3. Step 3: Cross multiply
    4,101.60x = 6,142.80 × 3,122.40
  4. Step 4: Simplify right side
    4,101.60x = 19,180,278.72
  5. Step 5: Solve for x
    x = 19,180,278.72/4,101.60
  6. Step 6: Final answer
    x = 4,676.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.