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Finding the Fourth Proportional to 5,627.64, 7,765.83 and 3,361.54

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Solution

The fourth proportional to 5,627.64, 7,765.83 and 3,361.54 is: 4,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627.64 : 7,765.83 = 3,361.54 : x
  2. Step 2: Convert to fraction form
    5,627.64/7,765.83 = 3,361.54/x
  3. Step 3: Cross multiply
    5,627.64x = 7,765.83 × 3,361.54
  4. Step 4: Simplify right side
    5,627.64x = 26,105,148.18
  5. Step 5: Solve for x
    x = 26,105,148.18/5,627.64
  6. Step 6: Final answer
    x = 4,638.74

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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.