Home / 3,895.47-5,373.87-2,831.58

Finding the Fourth Proportional to 3,895.47, 5,373.87 and 2,831.58

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Solution

The fourth proportional to 3,895.47, 5,373.87 and 2,831.58 is: 3,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.47 : 5,373.87 = 2,831.58 : x
  2. Step 2: Convert to fraction form
    3,895.47/5,373.87 = 2,831.58/x
  3. Step 3: Cross multiply
    3,895.47x = 5,373.87 × 2,831.58
  4. Step 4: Simplify right side
    3,895.47x = 15,216,549.89
  5. Step 5: Solve for x
    x = 15,216,549.89/3,895.47
  6. Step 6: Final answer
    x = 3,906.22

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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.