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Finding the Fourth Proportional to 8,754.78, 13,130.19 and 2,514.78

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Solution

The fourth proportional to 8,754.78, 13,130.19 and 2,514.78 is: 3,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.78 : 13,130.19 = 2,514.78 : x
  2. Step 2: Convert to fraction form
    8,754.78/13,130.19 = 2,514.78/x
  3. Step 3: Cross multiply
    8,754.78x = 13,130.19 × 2,514.78
  4. Step 4: Simplify right side
    8,754.78x = 33,019,539.21
  5. Step 5: Solve for x
    x = 33,019,539.21/8,754.78
  6. Step 6: Final answer
    x = 3,771.60

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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.