Home / 2,455.43-3,389.45-1,571.72

Finding the Fourth Proportional to 2,455.43, 3,389.45 and 1,571.72

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Solution

The fourth proportional to 2,455.43, 3,389.45 and 1,571.72 is: 2,169.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.43 : 3,389.45 = 1,571.72 : x
  2. Step 2: Convert to fraction form
    2,455.43/3,389.45 = 1,571.72/x
  3. Step 3: Cross multiply
    2,455.43x = 3,389.45 × 1,571.72
  4. Step 4: Simplify right side
    2,455.43x = 5,327,241.55
  5. Step 5: Solve for x
    x = 5,327,241.55/2,455.43
  6. Step 6: Final answer
    x = 2,169.58

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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.