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Finding the Fourth Proportional to 8,786.16, 12,104.28 and 7,223.28

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Solution

The fourth proportional to 8,786.16, 12,104.28 and 7,223.28 is: 9,951.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.16 : 12,104.28 = 7,223.28 : x
  2. Step 2: Convert to fraction form
    8,786.16/12,104.28 = 7,223.28/x
  3. Step 3: Cross multiply
    8,786.16x = 12,104.28 × 7,223.28
  4. Step 4: Simplify right side
    8,786.16x = 87,432,603.64
  5. Step 5: Solve for x
    x = 87,432,603.64/8,786.16
  6. Step 6: Final answer
    x = 9,951.17

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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.