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Finding the Fourth Proportional to 4,266.40, 6,400.40 and 1,344.64

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Solution

The fourth proportional to 4,266.40, 6,400.40 and 1,344.64 is: 2,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,266.40 : 6,400.40 = 1,344.64 : x
  2. Step 2: Convert to fraction form
    4,266.40/6,400.40 = 1,344.64/x
  3. Step 3: Cross multiply
    4,266.40x = 6,400.40 × 1,344.64
  4. Step 4: Simplify right side
    4,266.40x = 8,606,233.86
  5. Step 5: Solve for x
    x = 8,606,233.86/4,266.40
  6. Step 6: Final answer
    x = 2,017.21

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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.