Home / 2,831.52-3,904.56-1,898.40

Finding the Fourth Proportional to 2,831.52, 3,904.56 and 1,898.40

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Solution

The fourth proportional to 2,831.52, 3,904.56 and 1,898.40 is: 2,617.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.52 : 3,904.56 = 1,898.40 : x
  2. Step 2: Convert to fraction form
    2,831.52/3,904.56 = 1,898.40/x
  3. Step 3: Cross multiply
    2,831.52x = 3,904.56 × 1,898.40
  4. Step 4: Simplify right side
    2,831.52x = 7,412,416.70
  5. Step 5: Solve for x
    x = 7,412,416.70/2,831.52
  6. Step 6: Final answer
    x = 2,617.82

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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.