Home / 3,778.34-5,667.30-1,312.43

Finding the Fourth Proportional to 3,778.34, 5,667.30 and 1,312.43

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Solution

The fourth proportional to 3,778.34, 5,667.30 and 1,312.43 is: 1,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.34 : 5,667.30 = 1,312.43 : x
  2. Step 2: Convert to fraction form
    3,778.34/5,667.30 = 1,312.43/x
  3. Step 3: Cross multiply
    3,778.34x = 5,667.30 × 1,312.43
  4. Step 4: Simplify right side
    3,778.34x = 7,437,906.20
  5. Step 5: Solve for x
    x = 7,437,906.20/3,778.34
  6. Step 6: Final answer
    x = 1,968.57

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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.