Home / 11,745.88-17,618.91-2,980.78

Finding the Fourth Proportional to 11,745.88, 17,618.91 and 2,980.78

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Solution

The fourth proportional to 11,745.88, 17,618.91 and 2,980.78 is: 4,471.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.88 : 17,618.91 = 2,980.78 : x
  2. Step 2: Convert to fraction form
    11,745.88/17,618.91 = 2,980.78/x
  3. Step 3: Cross multiply
    11,745.88x = 17,618.91 × 2,980.78
  4. Step 4: Simplify right side
    11,745.88x = 52,518,094.55
  5. Step 5: Solve for x
    x = 52,518,094.55/11,745.88
  6. Step 6: Final answer
    x = 4,471.19

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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.