Home / 7,620.66-11,431.80-2,073.78

Finding the Fourth Proportional to 7,620.66, 11,431.80 and 2,073.78

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Solution

The fourth proportional to 7,620.66, 11,431.80 and 2,073.78 is: 3,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.66 : 11,431.80 = 2,073.78 : x
  2. Step 2: Convert to fraction form
    7,620.66/11,431.80 = 2,073.78/x
  3. Step 3: Cross multiply
    7,620.66x = 11,431.80 × 2,073.78
  4. Step 4: Simplify right side
    7,620.66x = 23,707,038.20
  5. Step 5: Solve for x
    x = 23,707,038.20/7,620.66
  6. Step 6: Final answer
    x = 3,110.89

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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.