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Finding the Fourth Proportional to 8,788.64, 12,136.91 and 7,522.47

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Solution

The fourth proportional to 8,788.64, 12,136.91 and 7,522.47 is: 10,388.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.64 : 12,136.91 = 7,522.47 : x
  2. Step 2: Convert to fraction form
    8,788.64/12,136.91 = 7,522.47/x
  3. Step 3: Cross multiply
    8,788.64x = 12,136.91 × 7,522.47
  4. Step 4: Simplify right side
    8,788.64x = 91,299,503.76
  5. Step 5: Solve for x
    x = 91,299,503.76/8,788.64
  6. Step 6: Final answer
    x = 10,388.36

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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.