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Finding the Fourth Proportional to 8,656.64, 12,983.64 and 2,416

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Solution

The fourth proportional to 8,656.64, 12,983.64 and 2,416 is: 3,623.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.64 : 12,983.64 = 2,416 : x
  2. Step 2: Convert to fraction form
    8,656.64/12,983.64 = 2,416/x
  3. Step 3: Cross multiply
    8,656.64x = 12,983.64 × 2,416
  4. Step 4: Simplify right side
    8,656.64x = 31,368,474.24
  5. Step 5: Solve for x
    x = 31,368,474.24/8,656.64
  6. Step 6: Final answer
    x = 3,623.63

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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.