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Finding the Fourth Proportional to 8,590, 12,887.16 and 2,434

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Solution

The fourth proportional to 8,590, 12,887.16 and 2,434 is: 3,651.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590 : 12,887.16 = 2,434 : x
  2. Step 2: Convert to fraction form
    8,590/12,887.16 = 2,434/x
  3. Step 3: Cross multiply
    8,590x = 12,887.16 × 2,434
  4. Step 4: Simplify right side
    8,590x = 31,367,347.44
  5. Step 5: Solve for x
    x = 31,367,347.44/8,590
  6. Step 6: Final answer
    x = 3,651.61

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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.