Home / 3,831.19-5,283.53-2,485.40

Finding the Fourth Proportional to 3,831.19, 5,283.53 and 2,485.40

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Solution

The fourth proportional to 3,831.19, 5,283.53 and 2,485.40 is: 3,427.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.19 : 5,283.53 = 2,485.40 : x
  2. Step 2: Convert to fraction form
    3,831.19/5,283.53 = 2,485.40/x
  3. Step 3: Cross multiply
    3,831.19x = 5,283.53 × 2,485.40
  4. Step 4: Simplify right side
    3,831.19x = 13,131,655.94
  5. Step 5: Solve for x
    x = 13,131,655.94/3,831.19
  6. Step 6: Final answer
    x = 3,427.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.