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Finding the Fourth Proportional to 7,117.79, 10,679.12 and 2,676.09

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Solution

The fourth proportional to 7,117.79, 10,679.12 and 2,676.09 is: 4,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.79 : 10,679.12 = 2,676.09 : x
  2. Step 2: Convert to fraction form
    7,117.79/10,679.12 = 2,676.09/x
  3. Step 3: Cross multiply
    7,117.79x = 10,679.12 × 2,676.09
  4. Step 4: Simplify right side
    7,117.79x = 28,578,272.86
  5. Step 5: Solve for x
    x = 28,578,272.86/7,117.79
  6. Step 6: Final answer
    x = 4,015.05

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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.