Home / 3,157.80-4,736.70-1,695.78

Finding the Fourth Proportional to 3,157.80, 4,736.70 and 1,695.78

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Solution

The fourth proportional to 3,157.80, 4,736.70 and 1,695.78 is: 2,543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.80 : 4,736.70 = 1,695.78 : x
  2. Step 2: Convert to fraction form
    3,157.80/4,736.70 = 1,695.78/x
  3. Step 3: Cross multiply
    3,157.80x = 4,736.70 × 1,695.78
  4. Step 4: Simplify right side
    3,157.80x = 8,032,401.13
  5. Step 5: Solve for x
    x = 8,032,401.13/3,157.80
  6. Step 6: Final answer
    x = 2,543.67

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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.