Home / 4,086.40-6,129.60-3,503.20

Finding the Fourth Proportional to 4,086.40, 6,129.60 and 3,503.20

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Solution

The fourth proportional to 4,086.40, 6,129.60 and 3,503.20 is: 5,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.40 : 6,129.60 = 3,503.20 : x
  2. Step 2: Convert to fraction form
    4,086.40/6,129.60 = 3,503.20/x
  3. Step 3: Cross multiply
    4,086.40x = 6,129.60 × 3,503.20
  4. Step 4: Simplify right side
    4,086.40x = 21,473,214.72
  5. Step 5: Solve for x
    x = 21,473,214.72/4,086.40
  6. Step 6: Final answer
    x = 5,254.80

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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.