Home / 8,618.30-12,927.50-3,071.85

Finding the Fourth Proportional to 8,618.30, 12,927.50 and 3,071.85

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Solution

The fourth proportional to 8,618.30, 12,927.50 and 3,071.85 is: 4,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.30 : 12,927.50 = 3,071.85 : x
  2. Step 2: Convert to fraction form
    8,618.30/12,927.50 = 3,071.85/x
  3. Step 3: Cross multiply
    8,618.30x = 12,927.50 × 3,071.85
  4. Step 4: Simplify right side
    8,618.30x = 39,711,340.88
  5. Step 5: Solve for x
    x = 39,711,340.88/8,618.30
  6. Step 6: Final answer
    x = 4,607.79

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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.