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Finding the Fourth Proportional to 11,782.78, 17,671.41 and 3,460.57

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Solution

The fourth proportional to 11,782.78, 17,671.41 and 3,460.57 is: 5,190.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,782.78 : 17,671.41 = 3,460.57 : x
  2. Step 2: Convert to fraction form
    11,782.78/17,671.41 = 3,460.57/x
  3. Step 3: Cross multiply
    11,782.78x = 17,671.41 × 3,460.57
  4. Step 4: Simplify right side
    11,782.78x = 61,153,151.30
  5. Step 5: Solve for x
    x = 61,153,151.30/11,782.78
  6. Step 6: Final answer
    x = 5,190.04

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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.