Home / 2,831.79-3,908.33-1,573.25

Finding the Fourth Proportional to 2,831.79, 3,908.33 and 1,573.25

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Solution

The fourth proportional to 2,831.79, 3,908.33 and 1,573.25 is: 2,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.79 : 3,908.33 = 1,573.25 : x
  2. Step 2: Convert to fraction form
    2,831.79/3,908.33 = 1,573.25/x
  3. Step 3: Cross multiply
    2,831.79x = 3,908.33 × 1,573.25
  4. Step 4: Simplify right side
    2,831.79x = 6,148,780.17
  5. Step 5: Solve for x
    x = 6,148,780.17/2,831.79
  6. Step 6: Final answer
    x = 2,171.34

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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.