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Finding the Fourth Proportional to 9,991.74, 14,995.12 and 3,757.90

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Solution

The fourth proportional to 9,991.74, 14,995.12 and 3,757.90 is: 5,639.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.74 : 14,995.12 = 3,757.90 : x
  2. Step 2: Convert to fraction form
    9,991.74/14,995.12 = 3,757.90/x
  3. Step 3: Cross multiply
    9,991.74x = 14,995.12 × 3,757.90
  4. Step 4: Simplify right side
    9,991.74x = 56,350,161.45
  5. Step 5: Solve for x
    x = 56,350,161.45/9,991.74
  6. Step 6: Final answer
    x = 5,639.67

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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.