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Finding the Fourth Proportional to 6,288.95, 8,678.99 and 3,456.65

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Solution

The fourth proportional to 6,288.95, 8,678.99 and 3,456.65 is: 4,770.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,288.95 : 8,678.99 = 3,456.65 : x
  2. Step 2: Convert to fraction form
    6,288.95/8,678.99 = 3,456.65/x
  3. Step 3: Cross multiply
    6,288.95x = 8,678.99 × 3,456.65
  4. Step 4: Simplify right side
    6,288.95x = 30,000,170.11
  5. Step 5: Solve for x
    x = 30,000,170.11/6,288.95
  6. Step 6: Final answer
    x = 4,770.30

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1.5x scale

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.