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Finding the Fourth Proportional to 3,740.40, 5,612.40 and 2,862.60

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Solution

The fourth proportional to 3,740.40, 5,612.40 and 2,862.60 is: 4,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,740.40 : 5,612.40 = 2,862.60 : x
  2. Step 2: Convert to fraction form
    3,740.40/5,612.40 = 2,862.60/x
  3. Step 3: Cross multiply
    3,740.40x = 5,612.40 × 2,862.60
  4. Step 4: Simplify right side
    3,740.40x = 16,066,056.24
  5. Step 5: Solve for x
    x = 16,066,056.24/3,740.40
  6. Step 6: Final answer
    x = 4,295.28

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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.