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Finding the Fourth Proportional to 4,000.60, 5,990.10 and 3,136.60

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Solution

The fourth proportional to 4,000.60, 5,990.10 and 3,136.60 is: 4,696.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.60 : 5,990.10 = 3,136.60 : x
  2. Step 2: Convert to fraction form
    4,000.60/5,990.10 = 3,136.60/x
  3. Step 3: Cross multiply
    4,000.60x = 5,990.10 × 3,136.60
  4. Step 4: Simplify right side
    4,000.60x = 18,788,547.66
  5. Step 5: Solve for x
    x = 18,788,547.66/4,000.60
  6. Step 6: Final answer
    x = 4,696.43

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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.