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Finding the Fourth Proportional to 6,430.17, 8,873.99 and 3,911.88

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Solution

The fourth proportional to 6,430.17, 8,873.99 and 3,911.88 is: 5,398.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.17 : 8,873.99 = 3,911.88 : x
  2. Step 2: Convert to fraction form
    6,430.17/8,873.99 = 3,911.88/x
  3. Step 3: Cross multiply
    6,430.17x = 8,873.99 × 3,911.88
  4. Step 4: Simplify right side
    6,430.17x = 34,713,984.00
  5. Step 5: Solve for x
    x = 34,713,984.00/6,430.17
  6. Step 6: Final answer
    x = 5,398.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.