Home / 3,948.43-5,918.48-1,315.23

Finding the Fourth Proportional to 3,948.43, 5,918.48 and 1,315.23

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Solution

The fourth proportional to 3,948.43, 5,918.48 and 1,315.23 is: 1,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.43 : 5,918.48 = 1,315.23 : x
  2. Step 2: Convert to fraction form
    3,948.43/5,918.48 = 1,315.23/x
  3. Step 3: Cross multiply
    3,948.43x = 5,918.48 × 1,315.23
  4. Step 4: Simplify right side
    3,948.43x = 7,784,162.45
  5. Step 5: Solve for x
    x = 7,784,162.45/3,948.43
  6. Step 6: Final answer
    x = 1,971.46

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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.