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Finding the Fourth Proportional to 8,812.13, 13,219.29 and 2,656.13

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Solution

The fourth proportional to 8,812.13, 13,219.29 and 2,656.13 is: 3,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.13 : 13,219.29 = 2,656.13 : x
  2. Step 2: Convert to fraction form
    8,812.13/13,219.29 = 2,656.13/x
  3. Step 3: Cross multiply
    8,812.13x = 13,219.29 × 2,656.13
  4. Step 4: Simplify right side
    8,812.13x = 35,112,086.65
  5. Step 5: Solve for x
    x = 35,112,086.65/8,812.13
  6. Step 6: Final answer
    x = 3,984.52

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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.