Home / 3,887.24-5,831.78-1,290.18

Finding the Fourth Proportional to 3,887.24, 5,831.78 and 1,290.18

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Solution

The fourth proportional to 3,887.24, 5,831.78 and 1,290.18 is: 1,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.24 : 5,831.78 = 1,290.18 : x
  2. Step 2: Convert to fraction form
    3,887.24/5,831.78 = 1,290.18/x
  3. Step 3: Cross multiply
    3,887.24x = 5,831.78 × 1,290.18
  4. Step 4: Simplify right side
    3,887.24x = 7,524,039.47
  5. Step 5: Solve for x
    x = 7,524,039.47/3,887.24
  6. Step 6: Final answer
    x = 1,935.57

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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.