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Finding the Fourth Proportional to 8,617.16, 12,927.78 and 3,070.99

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Solution

The fourth proportional to 8,617.16, 12,927.78 and 3,070.99 is: 4,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.16 : 12,927.78 = 3,070.99 : x
  2. Step 2: Convert to fraction form
    8,617.16/12,927.78 = 3,070.99/x
  3. Step 3: Cross multiply
    8,617.16x = 12,927.78 × 3,070.99
  4. Step 4: Simplify right side
    8,617.16x = 39,701,083.10
  5. Step 5: Solve for x
    x = 39,701,083.10/8,617.16
  6. Step 6: Final answer
    x = 4,607.21

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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.