Home / 5,183.40-7,775.09-1,287.81

Finding the Fourth Proportional to 5,183.40, 7,775.09 and 1,287.81

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Solution

The fourth proportional to 5,183.40, 7,775.09 and 1,287.81 is: 1,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,183.40 : 7,775.09 = 1,287.81 : x
  2. Step 2: Convert to fraction form
    5,183.40/7,775.09 = 1,287.81/x
  3. Step 3: Cross multiply
    5,183.40x = 7,775.09 × 1,287.81
  4. Step 4: Simplify right side
    5,183.40x = 10,012,841.87
  5. Step 5: Solve for x
    x = 10,012,841.87/5,183.40
  6. Step 6: Final answer
    x = 1,931.71

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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.