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Finding the Fourth Proportional to 2,099.81, 3,150.74 and 1,487.45

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Solution

The fourth proportional to 2,099.81, 3,150.74 and 1,487.45 is: 2,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.81 : 3,150.74 = 1,487.45 : x
  2. Step 2: Convert to fraction form
    2,099.81/3,150.74 = 1,487.45/x
  3. Step 3: Cross multiply
    2,099.81x = 3,150.74 × 1,487.45
  4. Step 4: Simplify right side
    2,099.81x = 4,686,568.21
  5. Step 5: Solve for x
    x = 4,686,568.21/2,099.81
  6. Step 6: Final answer
    x = 2,231.90

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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.