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Finding the Fourth Proportional to 2,803.16, 4,200.42 and 1,775

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Solution

The fourth proportional to 2,803.16, 4,200.42 and 1,775 is: 2,659.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.16 : 4,200.42 = 1,775 : x
  2. Step 2: Convert to fraction form
    2,803.16/4,200.42 = 1,775/x
  3. Step 3: Cross multiply
    2,803.16x = 4,200.42 × 1,775
  4. Step 4: Simplify right side
    2,803.16x = 7,455,745.50
  5. Step 5: Solve for x
    x = 7,455,745.50/2,803.16
  6. Step 6: Final answer
    x = 2,659.76

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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.