Home / 6,428.30-8,872.00-4,070.66

Finding the Fourth Proportional to 6,428.30, 8,872.00 and 4,070.66

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Solution

The fourth proportional to 6,428.30, 8,872.00 and 4,070.66 is: 5,618.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.30 : 8,872.00 = 4,070.66 : x
  2. Step 2: Convert to fraction form
    6,428.30/8,872.00 = 4,070.66/x
  3. Step 3: Cross multiply
    6,428.30x = 8,872.00 × 4,070.66
  4. Step 4: Simplify right side
    6,428.30x = 36,114,840.98
  5. Step 5: Solve for x
    x = 36,114,840.98/6,428.30
  6. Step 6: Final answer
    x = 5,618.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.