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Finding the Fourth Proportional to 8,812.88, 13,219.86 and 2,890.16

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Solution

The fourth proportional to 8,812.88, 13,219.86 and 2,890.16 is: 4,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.88 : 13,219.86 = 2,890.16 : x
  2. Step 2: Convert to fraction form
    8,812.88/13,219.86 = 2,890.16/x
  3. Step 3: Cross multiply
    8,812.88x = 13,219.86 × 2,890.16
  4. Step 4: Simplify right side
    8,812.88x = 38,207,510.58
  5. Step 5: Solve for x
    x = 38,207,510.58/8,812.88
  6. Step 6: Final answer
    x = 4,335.42

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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.