Home / 2,861.56-4,292.55-913.75

Finding the Fourth Proportional to 2,861.56, 4,292.55 and 913.75

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Solution

The fourth proportional to 2,861.56, 4,292.55 and 913.75 is: 1,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.56 : 4,292.55 = 913.75 : x
  2. Step 2: Convert to fraction form
    2,861.56/4,292.55 = 913.75/x
  3. Step 3: Cross multiply
    2,861.56x = 4,292.55 × 913.75
  4. Step 4: Simplify right side
    2,861.56x = 3,922,317.56
  5. Step 5: Solve for x
    x = 3,922,317.56/2,861.56
  6. Step 6: Final answer
    x = 1,370.69

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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.