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Finding the Fourth Proportional to 9,994.84, 14,992.50 and 3,420.98

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Solution

The fourth proportional to 9,994.84, 14,992.50 and 3,420.98 is: 5,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.84 : 14,992.50 = 3,420.98 : x
  2. Step 2: Convert to fraction form
    9,994.84/14,992.50 = 3,420.98/x
  3. Step 3: Cross multiply
    9,994.84x = 14,992.50 × 3,420.98
  4. Step 4: Simplify right side
    9,994.84x = 51,289,042.65
  5. Step 5: Solve for x
    x = 51,289,042.65/9,994.84
  6. Step 6: Final answer
    x = 5,131.55

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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.