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Finding the Fourth Proportional to 2,378.15, 3,567.53 and 734.86

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Solution

The fourth proportional to 2,378.15, 3,567.53 and 734.86 is: 1,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.15 : 3,567.53 = 734.86 : x
  2. Step 2: Convert to fraction form
    2,378.15/3,567.53 = 734.86/x
  3. Step 3: Cross multiply
    2,378.15x = 3,567.53 × 734.86
  4. Step 4: Simplify right side
    2,378.15x = 2,621,635.10
  5. Step 5: Solve for x
    x = 2,621,635.10/2,378.15
  6. Step 6: Final answer
    x = 1,102.38

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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.