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Finding the Fourth Proportional to 7,676.76, 11,515.13 and 2,130.11

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Solution

The fourth proportional to 7,676.76, 11,515.13 and 2,130.11 is: 3,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.76 : 11,515.13 = 2,130.11 : x
  2. Step 2: Convert to fraction form
    7,676.76/11,515.13 = 2,130.11/x
  3. Step 3: Cross multiply
    7,676.76x = 11,515.13 × 2,130.11
  4. Step 4: Simplify right side
    7,676.76x = 24,528,435.99
  5. Step 5: Solve for x
    x = 24,528,435.99/7,676.76
  6. Step 6: Final answer
    x = 3,195.15

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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.