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Finding the Fourth Proportional to 9,489.78, 14,234.61 and 3,246.78

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Solution

The fourth proportional to 9,489.78, 14,234.61 and 3,246.78 is: 4,870.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,489.78 : 14,234.61 = 3,246.78 : x
  2. Step 2: Convert to fraction form
    9,489.78/14,234.61 = 3,246.78/x
  3. Step 3: Cross multiply
    9,489.78x = 14,234.61 × 3,246.78
  4. Step 4: Simplify right side
    9,489.78x = 46,216,647.06
  5. Step 5: Solve for x
    x = 46,216,647.06/9,489.78
  6. Step 6: Final answer
    x = 4,870.15

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1.5x scale

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.