Home / 3,851.87-5,315.59-2,150.45

Finding the Fourth Proportional to 3,851.87, 5,315.59 and 2,150.45

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Solution

The fourth proportional to 3,851.87, 5,315.59 and 2,150.45 is: 2,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.87 : 5,315.59 = 2,150.45 : x
  2. Step 2: Convert to fraction form
    3,851.87/5,315.59 = 2,150.45/x
  3. Step 3: Cross multiply
    3,851.87x = 5,315.59 × 2,150.45
  4. Step 4: Simplify right side
    3,851.87x = 11,430,883.94
  5. Step 5: Solve for x
    x = 11,430,883.94/3,851.87
  6. Step 6: Final answer
    x = 2,967.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.