Home / 2,824.50-3,896.90-1,705.80

Finding the Fourth Proportional to 2,824.50, 3,896.90 and 1,705.80

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Solution

The fourth proportional to 2,824.50, 3,896.90 and 1,705.80 is: 2,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.50 : 3,896.90 = 1,705.80 : x
  2. Step 2: Convert to fraction form
    2,824.50/3,896.90 = 1,705.80/x
  3. Step 3: Cross multiply
    2,824.50x = 3,896.90 × 1,705.80
  4. Step 4: Simplify right side
    2,824.50x = 6,647,332.02
  5. Step 5: Solve for x
    x = 6,647,332.02/2,824.50
  6. Step 6: Final answer
    x = 2,353.45

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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.