Home / 7,430.20-11,142.60-3,731.20

Finding the Fourth Proportional to 7,430.20, 11,142.60 and 3,731.20

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Solution

The fourth proportional to 7,430.20, 11,142.60 and 3,731.20 is: 5,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.20 : 11,142.60 = 3,731.20 : x
  2. Step 2: Convert to fraction form
    7,430.20/11,142.60 = 3,731.20/x
  3. Step 3: Cross multiply
    7,430.20x = 11,142.60 × 3,731.20
  4. Step 4: Simplify right side
    7,430.20x = 41,575,269.12
  5. Step 5: Solve for x
    x = 41,575,269.12/7,430.20
  6. Step 6: Final answer
    x = 5,595.44

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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.