Home / 5,181.27-7,771.95-1,285.67

Finding the Fourth Proportional to 5,181.27, 7,771.95 and 1,285.67

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Solution

The fourth proportional to 5,181.27, 7,771.95 and 1,285.67 is: 1,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.27 : 7,771.95 = 1,285.67 : x
  2. Step 2: Convert to fraction form
    5,181.27/7,771.95 = 1,285.67/x
  3. Step 3: Cross multiply
    5,181.27x = 7,771.95 × 1,285.67
  4. Step 4: Simplify right side
    5,181.27x = 9,992,182.39
  5. Step 5: Solve for x
    x = 9,992,182.39/5,181.27
  6. Step 6: Final answer
    x = 1,928.52

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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.