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Finding the Fourth Proportional to 5,654.40, 7,803.04 and 3,136.44

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Solution

The fourth proportional to 5,654.40, 7,803.04 and 3,136.44 is: 4,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,654.40 : 7,803.04 = 3,136.44 : x
  2. Step 2: Convert to fraction form
    5,654.40/7,803.04 = 3,136.44/x
  3. Step 3: Cross multiply
    5,654.40x = 7,803.04 × 3,136.44
  4. Step 4: Simplify right side
    5,654.40x = 24,473,766.78
  5. Step 5: Solve for x
    x = 24,473,766.78/5,654.40
  6. Step 6: Final answer
    x = 4,328.27

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1.5x scale

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.