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Finding the Fourth Proportional to 8,312.00, 12,457.22 and 3,375.90

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Solution

The fourth proportional to 8,312.00, 12,457.22 and 3,375.90 is: 5,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.00 : 12,457.22 = 3,375.90 : x
  2. Step 2: Convert to fraction form
    8,312.00/12,457.22 = 3,375.90/x
  3. Step 3: Cross multiply
    8,312.00x = 12,457.22 × 3,375.90
  4. Step 4: Simplify right side
    8,312.00x = 42,054,312.12
  5. Step 5: Solve for x
    x = 42,054,312.12/8,312.00
  6. Step 6: Final answer
    x = 5,059.47

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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.