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Finding the Fourth Proportional to 5,611.12, 7,757.76 and 5,366.32

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Solution

The fourth proportional to 5,611.12, 7,757.76 and 5,366.32 is: 7,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.12 : 7,757.76 = 5,366.32 : x
  2. Step 2: Convert to fraction form
    5,611.12/7,757.76 = 5,366.32/x
  3. Step 3: Cross multiply
    5,611.12x = 7,757.76 × 5,366.32
  4. Step 4: Simplify right side
    5,611.12x = 41,630,622.64
  5. Step 5: Solve for x
    x = 41,630,622.64/5,611.12
  6. Step 6: Final answer
    x = 7,419.31

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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.