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Finding the Fourth Proportional to 9,798.45, 13,514.45 and 6,812.79

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Solution

The fourth proportional to 9,798.45, 13,514.45 and 6,812.79 is: 9,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,798.45 : 13,514.45 = 6,812.79 : x
  2. Step 2: Convert to fraction form
    9,798.45/13,514.45 = 6,812.79/x
  3. Step 3: Cross multiply
    9,798.45x = 13,514.45 × 6,812.79
  4. Step 4: Simplify right side
    9,798.45x = 92,071,109.82
  5. Step 5: Solve for x
    x = 92,071,109.82/9,798.45
  6. Step 6: Final answer
    x = 9,396.50

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1.5x scale

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.