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Finding the Fourth Proportional to 6,420.02, 9,630.30 and 3,136.02

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Solution

The fourth proportional to 6,420.02, 9,630.30 and 3,136.02 is: 4,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.02 : 9,630.30 = 3,136.02 : x
  2. Step 2: Convert to fraction form
    6,420.02/9,630.30 = 3,136.02/x
  3. Step 3: Cross multiply
    6,420.02x = 9,630.30 × 3,136.02
  4. Step 4: Simplify right side
    6,420.02x = 30,200,813.41
  5. Step 5: Solve for x
    x = 30,200,813.41/6,420.02
  6. Step 6: Final answer
    x = 4,704.16

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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.