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Finding the Fourth Proportional to 5,596.80, 8,395.20 and 4,142.40

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Solution

The fourth proportional to 5,596.80, 8,395.20 and 4,142.40 is: 6,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,596.80 : 8,395.20 = 4,142.40 : x
  2. Step 2: Convert to fraction form
    5,596.80/8,395.20 = 4,142.40/x
  3. Step 3: Cross multiply
    5,596.80x = 8,395.20 × 4,142.40
  4. Step 4: Simplify right side
    5,596.80x = 34,776,276.48
  5. Step 5: Solve for x
    x = 34,776,276.48/5,596.80
  6. Step 6: Final answer
    x = 6,213.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.