Home / 2,389.74-3,586.58-1,220.60

Finding the Fourth Proportional to 2,389.74, 3,586.58 and 1,220.60

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Solution

The fourth proportional to 2,389.74, 3,586.58 and 1,220.60 is: 1,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.74 : 3,586.58 = 1,220.60 : x
  2. Step 2: Convert to fraction form
    2,389.74/3,586.58 = 1,220.60/x
  3. Step 3: Cross multiply
    2,389.74x = 3,586.58 × 1,220.60
  4. Step 4: Simplify right side
    2,389.74x = 4,377,786.99
  5. Step 5: Solve for x
    x = 4,377,786.99/2,389.74
  6. Step 6: Final answer
    x = 1,831.91

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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.