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Finding the Fourth Proportional to 8,676.68, 13,018.30 and 5,216.36

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Solution

The fourth proportional to 8,676.68, 13,018.30 and 5,216.36 is: 7,826.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.68 : 13,018.30 = 5,216.36 : x
  2. Step 2: Convert to fraction form
    8,676.68/13,018.30 = 5,216.36/x
  3. Step 3: Cross multiply
    8,676.68x = 13,018.30 × 5,216.36
  4. Step 4: Simplify right side
    8,676.68x = 67,908,139.39
  5. Step 5: Solve for x
    x = 67,908,139.39/8,676.68
  6. Step 6: Final answer
    x = 7,826.51

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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.