Home / 4,120.56-6,178.92-2,389.68

Finding the Fourth Proportional to 4,120.56, 6,178.92 and 2,389.68

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Solution

The fourth proportional to 4,120.56, 6,178.92 and 2,389.68 is: 3,583.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.56 : 6,178.92 = 2,389.68 : x
  2. Step 2: Convert to fraction form
    4,120.56/6,178.92 = 2,389.68/x
  3. Step 3: Cross multiply
    4,120.56x = 6,178.92 × 2,389.68
  4. Step 4: Simplify right side
    4,120.56x = 14,765,641.55
  5. Step 5: Solve for x
    x = 14,765,641.55/4,120.56
  6. Step 6: Final answer
    x = 3,583.41

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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.