Home / 5,430.91-8,144.54-3,455.32

Finding the Fourth Proportional to 5,430.91, 8,144.54 and 3,455.32

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Solution

The fourth proportional to 5,430.91, 8,144.54 and 3,455.32 is: 5,181.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.91 : 8,144.54 = 3,455.32 : x
  2. Step 2: Convert to fraction form
    5,430.91/8,144.54 = 3,455.32/x
  3. Step 3: Cross multiply
    5,430.91x = 8,144.54 × 3,455.32
  4. Step 4: Simplify right side
    5,430.91x = 28,141,933.95
  5. Step 5: Solve for x
    x = 28,141,933.95/5,430.91
  6. Step 6: Final answer
    x = 5,181.81

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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.