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Finding the Fourth Proportional to 9,478.78, 14,218.11 and 3,235.78

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Solution

The fourth proportional to 9,478.78, 14,218.11 and 3,235.78 is: 4,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.78 : 14,218.11 = 3,235.78 : x
  2. Step 2: Convert to fraction form
    9,478.78/14,218.11 = 3,235.78/x
  3. Step 3: Cross multiply
    9,478.78x = 14,218.11 × 3,235.78
  4. Step 4: Simplify right side
    9,478.78x = 46,006,675.98
  5. Step 5: Solve for x
    x = 46,006,675.98/9,478.78
  6. Step 6: Final answer
    x = 4,853.65

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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.