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Finding the Fourth Proportional to 7,478.46, 11,203.05 and 5,500.50

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Solution

The fourth proportional to 7,478.46, 11,203.05 and 5,500.50 is: 8,239.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.46 : 11,203.05 = 5,500.50 : x
  2. Step 2: Convert to fraction form
    7,478.46/11,203.05 = 5,500.50/x
  3. Step 3: Cross multiply
    7,478.46x = 11,203.05 × 5,500.50
  4. Step 4: Simplify right side
    7,478.46x = 61,622,376.53
  5. Step 5: Solve for x
    x = 61,622,376.53/7,478.46
  6. Step 6: Final answer
    x = 8,239.98

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1.5x scale

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.