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Finding the Fourth Proportional to 8,802.88, 12,143.82 and 5,215.57

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Solution

The fourth proportional to 8,802.88, 12,143.82 and 5,215.57 is: 7,195.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,802.88 : 12,143.82 = 5,215.57 : x
  2. Step 2: Convert to fraction form
    8,802.88/12,143.82 = 5,215.57/x
  3. Step 3: Cross multiply
    8,802.88x = 12,143.82 × 5,215.57
  4. Step 4: Simplify right side
    8,802.88x = 63,336,943.28
  5. Step 5: Solve for x
    x = 63,336,943.28/8,802.88
  6. Step 6: Final answer
    x = 7,195.03

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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.