Home / 7,478.20-11,212.80-3,093.31

Finding the Fourth Proportional to 7,478.20, 11,212.80 and 3,093.31

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Solution

The fourth proportional to 7,478.20, 11,212.80 and 3,093.31 is: 4,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.20 : 11,212.80 = 3,093.31 : x
  2. Step 2: Convert to fraction form
    7,478.20/11,212.80 = 3,093.31/x
  3. Step 3: Cross multiply
    7,478.20x = 11,212.80 × 3,093.31
  4. Step 4: Simplify right side
    7,478.20x = 34,684,666.37
  5. Step 5: Solve for x
    x = 34,684,666.37/7,478.20
  6. Step 6: Final answer
    x = 4,638.10

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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.