Home / 7,821.16-11,720.67-2,885.83

Finding the Fourth Proportional to 7,821.16, 11,720.67 and 2,885.83

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Solution

The fourth proportional to 7,821.16, 11,720.67 and 2,885.83 is: 4,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.16 : 11,720.67 = 2,885.83 : x
  2. Step 2: Convert to fraction form
    7,821.16/11,720.67 = 2,885.83/x
  3. Step 3: Cross multiply
    7,821.16x = 11,720.67 × 2,885.83
  4. Step 4: Simplify right side
    7,821.16x = 33,823,861.11
  5. Step 5: Solve for x
    x = 33,823,861.11/7,821.16
  6. Step 6: Final answer
    x = 4,324.66

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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.