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Finding the Fourth Proportional to 8,679.06, 13,018.59 and 4,983.64

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Solution

The fourth proportional to 8,679.06, 13,018.59 and 4,983.64 is: 7,475.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.06 : 13,018.59 = 4,983.64 : x
  2. Step 2: Convert to fraction form
    8,679.06/13,018.59 = 4,983.64/x
  3. Step 3: Cross multiply
    8,679.06x = 13,018.59 × 4,983.64
  4. Step 4: Simplify right side
    8,679.06x = 64,879,965.87
  5. Step 5: Solve for x
    x = 64,879,965.87/8,679.06
  6. Step 6: Final answer
    x = 7,475.46

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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.