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Finding the Fourth Proportional to 8,762.78, 13,142.19 and 2,522.78

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Solution

The fourth proportional to 8,762.78, 13,142.19 and 2,522.78 is: 3,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.78 : 13,142.19 = 2,522.78 : x
  2. Step 2: Convert to fraction form
    8,762.78/13,142.19 = 2,522.78/x
  3. Step 3: Cross multiply
    8,762.78x = 13,142.19 × 2,522.78
  4. Step 4: Simplify right side
    8,762.78x = 33,154,854.09
  5. Step 5: Solve for x
    x = 33,154,854.09/8,762.78
  6. Step 6: Final answer
    x = 3,783.60

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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.