Home / 2,811.10-4,208.55-1,717.60

Finding the Fourth Proportional to 2,811.10, 4,208.55 and 1,717.60

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Solution

The fourth proportional to 2,811.10, 4,208.55 and 1,717.60 is: 2,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.10 : 4,208.55 = 1,717.60 : x
  2. Step 2: Convert to fraction form
    2,811.10/4,208.55 = 1,717.60/x
  3. Step 3: Cross multiply
    2,811.10x = 4,208.55 × 1,717.60
  4. Step 4: Simplify right side
    2,811.10x = 7,228,605.48
  5. Step 5: Solve for x
    x = 7,228,605.48/2,811.10
  6. Step 6: Final answer
    x = 2,571.45

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1.5x scale

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.