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Finding the Fourth Proportional to 7,212.70, 10,819.05 and 4,750.30

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Solution

The fourth proportional to 7,212.70, 10,819.05 and 4,750.30 is: 7,125.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.70 : 10,819.05 = 4,750.30 : x
  2. Step 2: Convert to fraction form
    7,212.70/10,819.05 = 4,750.30/x
  3. Step 3: Cross multiply
    7,212.70x = 10,819.05 × 4,750.30
  4. Step 4: Simplify right side
    7,212.70x = 51,393,733.22
  5. Step 5: Solve for x
    x = 51,393,733.22/7,212.70
  6. Step 6: Final answer
    x = 7,125.45

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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.