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Finding the Fourth Proportional to 8,812.75, 13,219.13 and 2,656.75

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Solution

The fourth proportional to 8,812.75, 13,219.13 and 2,656.75 is: 3,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.75 : 13,219.13 = 2,656.75 : x
  2. Step 2: Convert to fraction form
    8,812.75/13,219.13 = 2,656.75/x
  3. Step 3: Cross multiply
    8,812.75x = 13,219.13 × 2,656.75
  4. Step 4: Simplify right side
    8,812.75x = 35,119,923.63
  5. Step 5: Solve for x
    x = 35,119,923.63/8,812.75
  6. Step 6: Final answer
    x = 3,985.13

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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.