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Finding the Fourth Proportional to 4,245.40, 6,368.10 and 3,813.40

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Solution

The fourth proportional to 4,245.40, 6,368.10 and 3,813.40 is: 5,720.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245.40 : 6,368.10 = 3,813.40 : x
  2. Step 2: Convert to fraction form
    4,245.40/6,368.10 = 3,813.40/x
  3. Step 3: Cross multiply
    4,245.40x = 6,368.10 × 3,813.40
  4. Step 4: Simplify right side
    4,245.40x = 24,284,112.54
  5. Step 5: Solve for x
    x = 24,284,112.54/4,245.40
  6. Step 6: Final answer
    x = 5,720.10

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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.