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Finding the Fourth Proportional to 9,416.40, 12,995.40 and 5,226

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Solution

The fourth proportional to 9,416.40, 12,995.40 and 5,226 is: 7,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,416.40 : 12,995.40 = 5,226 : x
  2. Step 2: Convert to fraction form
    9,416.40/12,995.40 = 5,226/x
  3. Step 3: Cross multiply
    9,416.40x = 12,995.40 × 5,226
  4. Step 4: Simplify right side
    9,416.40x = 67,913,960.40
  5. Step 5: Solve for x
    x = 67,913,960.40/9,416.40
  6. Step 6: Final answer
    x = 7,212.31

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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.