Home / 7,676.90-11,515.10-2,130.59

Finding the Fourth Proportional to 7,676.90, 11,515.10 and 2,130.59

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Solution

The fourth proportional to 7,676.90, 11,515.10 and 2,130.59 is: 3,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.90 : 11,515.10 = 2,130.59 : x
  2. Step 2: Convert to fraction form
    7,676.90/11,515.10 = 2,130.59/x
  3. Step 3: Cross multiply
    7,676.90x = 11,515.10 × 2,130.59
  4. Step 4: Simplify right side
    7,676.90x = 24,533,888.68
  5. Step 5: Solve for x
    x = 24,533,888.68/7,676.90
  6. Step 6: Final answer
    x = 3,195.81

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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.