Home / 1,889.48-2,831.33-1,270.89

Finding the Fourth Proportional to 1,889.48, 2,831.33 and 1,270.89

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Solution

The fourth proportional to 1,889.48, 2,831.33 and 1,270.89 is: 1,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.48 : 2,831.33 = 1,270.89 : x
  2. Step 2: Convert to fraction form
    1,889.48/2,831.33 = 1,270.89/x
  3. Step 3: Cross multiply
    1,889.48x = 2,831.33 × 1,270.89
  4. Step 4: Simplify right side
    1,889.48x = 3,598,302.63
  5. Step 5: Solve for x
    x = 3,598,302.63/1,889.48
  6. Step 6: Final answer
    x = 1,904.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.