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Finding the Fourth Proportional to 1,903.57, 2,856.74 and 1,173.67

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Solution

The fourth proportional to 1,903.57, 2,856.74 and 1,173.67 is: 1,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.57 : 2,856.74 = 1,173.67 : x
  2. Step 2: Convert to fraction form
    1,903.57/2,856.74 = 1,173.67/x
  3. Step 3: Cross multiply
    1,903.57x = 2,856.74 × 1,173.67
  4. Step 4: Simplify right side
    1,903.57x = 3,352,857.03
  5. Step 5: Solve for x
    x = 3,352,857.03/1,903.57
  6. Step 6: Final answer
    x = 1,761.35

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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.