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Finding the Fourth Proportional to 8,875, 13,289.76 and 8,612.22

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Solution

The fourth proportional to 8,875, 13,289.76 and 8,612.22 is: 12,896.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875 : 13,289.76 = 8,612.22 : x
  2. Step 2: Convert to fraction form
    8,875/13,289.76 = 8,612.22/x
  3. Step 3: Cross multiply
    8,875x = 13,289.76 × 8,612.22
  4. Step 4: Simplify right side
    8,875x = 114,454,336.87
  5. Step 5: Solve for x
    x = 114,454,336.87/8,875
  6. Step 6: Final answer
    x = 12,896.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.