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Finding the Fourth Proportional to 9,990.98, 14,988.09 and 3,751.47

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Solution

The fourth proportional to 9,990.98, 14,988.09 and 3,751.47 is: 5,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.98 : 14,988.09 = 3,751.47 : x
  2. Step 2: Convert to fraction form
    9,990.98/14,988.09 = 3,751.47/x
  3. Step 3: Cross multiply
    9,990.98x = 14,988.09 × 3,751.47
  4. Step 4: Simplify right side
    9,990.98x = 56,227,369.99
  5. Step 5: Solve for x
    x = 56,227,369.99/9,990.98
  6. Step 6: Final answer
    x = 5,627.82

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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.