Home / 2,861.67-4,289.40-1,397.55

Finding the Fourth Proportional to 2,861.67, 4,289.40 and 1,397.55

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Solution

The fourth proportional to 2,861.67, 4,289.40 and 1,397.55 is: 2,094.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.67 : 4,289.40 = 1,397.55 : x
  2. Step 2: Convert to fraction form
    2,861.67/4,289.40 = 1,397.55/x
  3. Step 3: Cross multiply
    2,861.67x = 4,289.40 × 1,397.55
  4. Step 4: Simplify right side
    2,861.67x = 5,994,650.97
  5. Step 5: Solve for x
    x = 5,994,650.97/2,861.67
  6. Step 6: Final answer
    x = 2,094.81

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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.