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Finding the Fourth Proportional to 3,777.92, 5,667.91 and 1,312.88

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Solution

The fourth proportional to 3,777.92, 5,667.91 and 1,312.88 is: 1,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.92 : 5,667.91 = 1,312.88 : x
  2. Step 2: Convert to fraction form
    3,777.92/5,667.91 = 1,312.88/x
  3. Step 3: Cross multiply
    3,777.92x = 5,667.91 × 1,312.88
  4. Step 4: Simplify right side
    3,777.92x = 7,441,270.00
  5. Step 5: Solve for x
    x = 7,441,270.00/3,777.92
  6. Step 6: Final answer
    x = 1,969.67

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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.