Home / 3,735.80-5,155.42-2,142.50

Finding the Fourth Proportional to 3,735.80, 5,155.42 and 2,142.50

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Solution

The fourth proportional to 3,735.80, 5,155.42 and 2,142.50 is: 2,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,735.80 : 5,155.42 = 2,142.50 : x
  2. Step 2: Convert to fraction form
    3,735.80/5,155.42 = 2,142.50/x
  3. Step 3: Cross multiply
    3,735.80x = 5,155.42 × 2,142.50
  4. Step 4: Simplify right side
    3,735.80x = 11,045,476.64
  5. Step 5: Solve for x
    x = 11,045,476.64/3,735.80
  6. Step 6: Final answer
    x = 2,956.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.