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Finding the Fourth Proportional to 5,505, 7,611.32 and 5,260.20

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Solution

The fourth proportional to 5,505, 7,611.32 and 5,260.20 is: 7,272.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,505 : 7,611.32 = 5,260.20 : x
  2. Step 2: Convert to fraction form
    5,505/7,611.32 = 5,260.20/x
  3. Step 3: Cross multiply
    5,505x = 7,611.32 × 5,260.20
  4. Step 4: Simplify right side
    5,505x = 40,037,065.46
  5. Step 5: Solve for x
    x = 40,037,065.46/5,505
  6. Step 6: Final answer
    x = 7,272.85

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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.