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Finding the Fourth Proportional to 6,839.76, 10,259.64 and 1,645.64

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Solution

The fourth proportional to 6,839.76, 10,259.64 and 1,645.64 is: 2,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,839.76 : 10,259.64 = 1,645.64 : x
  2. Step 2: Convert to fraction form
    6,839.76/10,259.64 = 1,645.64/x
  3. Step 3: Cross multiply
    6,839.76x = 10,259.64 × 1,645.64
  4. Step 4: Simplify right side
    6,839.76x = 16,883,622.67
  5. Step 5: Solve for x
    x = 16,883,622.67/6,839.76
  6. Step 6: Final answer
    x = 2,468.45

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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.