Home / 3,812.70-5,718.58-1,347.60

Finding the Fourth Proportional to 3,812.70, 5,718.58 and 1,347.60

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Solution

The fourth proportional to 3,812.70, 5,718.58 and 1,347.60 is: 2,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.70 : 5,718.58 = 1,347.60 : x
  2. Step 2: Convert to fraction form
    3,812.70/5,718.58 = 1,347.60/x
  3. Step 3: Cross multiply
    3,812.70x = 5,718.58 × 1,347.60
  4. Step 4: Simplify right side
    3,812.70x = 7,706,358.41
  5. Step 5: Solve for x
    x = 7,706,358.41/3,812.70
  6. Step 6: Final answer
    x = 2,021.23

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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.