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Finding the Fourth Proportional to 9,859.99, 13,607.99 and 5,612.09

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Solution

The fourth proportional to 9,859.99, 13,607.99 and 5,612.09 is: 7,745.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859.99 : 13,607.99 = 5,612.09 : x
  2. Step 2: Convert to fraction form
    9,859.99/13,607.99 = 5,612.09/x
  3. Step 3: Cross multiply
    9,859.99x = 13,607.99 × 5,612.09
  4. Step 4: Simplify right side
    9,859.99x = 76,369,181.65
  5. Step 5: Solve for x
    x = 76,369,181.65/9,859.99
  6. Step 6: Final answer
    x = 7,745.36

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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.