Home / 4,258.20-6,389.10-2,065.80

Finding the Fourth Proportional to 4,258.20, 6,389.10 and 2,065.80

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Solution

The fourth proportional to 4,258.20, 6,389.10 and 2,065.80 is: 3,099.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,258.20 : 6,389.10 = 2,065.80 : x
  2. Step 2: Convert to fraction form
    4,258.20/6,389.10 = 2,065.80/x
  3. Step 3: Cross multiply
    4,258.20x = 6,389.10 × 2,065.80
  4. Step 4: Simplify right side
    4,258.20x = 13,198,602.78
  5. Step 5: Solve for x
    x = 13,198,602.78/4,258.20
  6. Step 6: Final answer
    x = 3,099.57

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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.