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Finding the Fourth Proportional to 6,885.40, 10,328.10 and 6,136.60

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Solution

The fourth proportional to 6,885.40, 10,328.10 and 6,136.60 is: 9,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.40 : 10,328.10 = 6,136.60 : x
  2. Step 2: Convert to fraction form
    6,885.40/10,328.10 = 6,136.60/x
  3. Step 3: Cross multiply
    6,885.40x = 10,328.10 × 6,136.60
  4. Step 4: Simplify right side
    6,885.40x = 63,379,418.46
  5. Step 5: Solve for x
    x = 63,379,418.46/6,885.40
  6. Step 6: Final answer
    x = 9,204.90

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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.