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Finding the Fourth Proportional to 6,420.50, 8,860.29 and 3,476.50

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Solution

The fourth proportional to 6,420.50, 8,860.29 and 3,476.50 is: 4,797.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.50 : 8,860.29 = 3,476.50 : x
  2. Step 2: Convert to fraction form
    6,420.50/8,860.29 = 3,476.50/x
  3. Step 3: Cross multiply
    6,420.50x = 8,860.29 × 3,476.50
  4. Step 4: Simplify right side
    6,420.50x = 30,802,798.19
  5. Step 5: Solve for x
    x = 30,802,798.19/6,420.50
  6. Step 6: Final answer
    x = 4,797.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.