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Finding the Fourth Proportional to 5,155.55, 7,735.41 and 1,868.97

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Solution

The fourth proportional to 5,155.55, 7,735.41 and 1,868.97 is: 2,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.55 : 7,735.41 = 1,868.97 : x
  2. Step 2: Convert to fraction form
    5,155.55/7,735.41 = 1,868.97/x
  3. Step 3: Cross multiply
    5,155.55x = 7,735.41 × 1,868.97
  4. Step 4: Simplify right side
    5,155.55x = 14,457,249.23
  5. Step 5: Solve for x
    x = 14,457,249.23/5,155.55
  6. Step 6: Final answer
    x = 2,804.21

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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.