Home / 3,626.40-4,985.18-3,120.41

Finding the Fourth Proportional to 3,626.40, 4,985.18 and 3,120.41

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Solution

The fourth proportional to 3,626.40, 4,985.18 and 3,120.41 is: 4,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,626.40 : 4,985.18 = 3,120.41 : x
  2. Step 2: Convert to fraction form
    3,626.40/4,985.18 = 3,120.41/x
  3. Step 3: Cross multiply
    3,626.40x = 4,985.18 × 3,120.41
  4. Step 4: Simplify right side
    3,626.40x = 15,555,788.40
  5. Step 5: Solve for x
    x = 15,555,788.40/3,626.40
  6. Step 6: Final answer
    x = 4,289.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.