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Finding the Fourth Proportional to 8,605.87, 12,911.08 and 2,682.74

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Solution

The fourth proportional to 8,605.87, 12,911.08 and 2,682.74 is: 4,024.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.87 : 12,911.08 = 2,682.74 : x
  2. Step 2: Convert to fraction form
    8,605.87/12,911.08 = 2,682.74/x
  3. Step 3: Cross multiply
    8,605.87x = 12,911.08 × 2,682.74
  4. Step 4: Simplify right side
    8,605.87x = 34,637,070.76
  5. Step 5: Solve for x
    x = 34,637,070.76/8,605.87
  6. Step 6: Final answer
    x = 4,024.82

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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.