Home / 2,660.48-3,987.12-1,889.36

Finding the Fourth Proportional to 2,660.48, 3,987.12 and 1,889.36

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Solution

The fourth proportional to 2,660.48, 3,987.12 and 1,889.36 is: 2,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.48 : 3,987.12 = 1,889.36 : x
  2. Step 2: Convert to fraction form
    2,660.48/3,987.12 = 1,889.36/x
  3. Step 3: Cross multiply
    2,660.48x = 3,987.12 × 1,889.36
  4. Step 4: Simplify right side
    2,660.48x = 7,533,105.04
  5. Step 5: Solve for x
    x = 7,533,105.04/2,660.48
  6. Step 6: Final answer
    x = 2,831.48

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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.