Home / 7,129.08-10,695.96-3,430.85

Finding the Fourth Proportional to 7,129.08, 10,695.96 and 3,430.85

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Solution

The fourth proportional to 7,129.08, 10,695.96 and 3,430.85 is: 5,147.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.08 : 10,695.96 = 3,430.85 : x
  2. Step 2: Convert to fraction form
    7,129.08/10,695.96 = 3,430.85/x
  3. Step 3: Cross multiply
    7,129.08x = 10,695.96 × 3,430.85
  4. Step 4: Simplify right side
    7,129.08x = 36,696,180.89
  5. Step 5: Solve for x
    x = 36,696,180.89/7,129.08
  6. Step 6: Final answer
    x = 5,147.39

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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.