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Finding the Fourth Proportional to 7,610.78, 11,416.04 and 3,910.88

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Solution

The fourth proportional to 7,610.78, 11,416.04 and 3,910.88 is: 5,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,610.78 : 11,416.04 = 3,910.88 : x
  2. Step 2: Convert to fraction form
    7,610.78/11,416.04 = 3,910.88/x
  3. Step 3: Cross multiply
    7,610.78x = 11,416.04 × 3,910.88
  4. Step 4: Simplify right side
    7,610.78x = 44,646,762.52
  5. Step 5: Solve for x
    x = 44,646,762.52/7,610.78
  6. Step 6: Final answer
    x = 5,866.25

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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.