Home / 3,831.57-5,287.47-2,152.93

Finding the Fourth Proportional to 3,831.57, 5,287.47 and 2,152.93

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Solution

The fourth proportional to 3,831.57, 5,287.47 and 2,152.93 is: 2,970.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.57 : 5,287.47 = 2,152.93 : x
  2. Step 2: Convert to fraction form
    3,831.57/5,287.47 = 2,152.93/x
  3. Step 3: Cross multiply
    3,831.57x = 5,287.47 × 2,152.93
  4. Step 4: Simplify right side
    3,831.57x = 11,383,552.79
  5. Step 5: Solve for x
    x = 11,383,552.79/3,831.57
  6. Step 6: Final answer
    x = 2,970.99

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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.