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Finding the Fourth Proportional to 5,683.64, 7,843.80 and 3,165.72

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Solution

The fourth proportional to 5,683.64, 7,843.80 and 3,165.72 is: 4,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,683.64 : 7,843.80 = 3,165.72 : x
  2. Step 2: Convert to fraction form
    5,683.64/7,843.80 = 3,165.72/x
  3. Step 3: Cross multiply
    5,683.64x = 7,843.80 × 3,165.72
  4. Step 4: Simplify right side
    5,683.64x = 24,831,274.54
  5. Step 5: Solve for x
    x = 24,831,274.54/5,683.64
  6. Step 6: Final answer
    x = 4,368.90

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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.