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Finding the Fourth Proportional to 9,969, 14,959.98 and 3,813

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Solution

The fourth proportional to 9,969, 14,959.98 and 3,813 is: 5,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,969 : 14,959.98 = 3,813 : x
  2. Step 2: Convert to fraction form
    9,969/14,959.98 = 3,813/x
  3. Step 3: Cross multiply
    9,969x = 14,959.98 × 3,813
  4. Step 4: Simplify right side
    9,969x = 57,042,403.74
  5. Step 5: Solve for x
    x = 57,042,403.74/9,969
  6. Step 6: Final answer
    x = 5,721.98

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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.