Home / 3,857.89-5,323.90-2,089.50

Finding the Fourth Proportional to 3,857.89, 5,323.90 and 2,089.50

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Solution

The fourth proportional to 3,857.89, 5,323.90 and 2,089.50 is: 2,883.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.89 : 5,323.90 = 2,089.50 : x
  2. Step 2: Convert to fraction form
    3,857.89/5,323.90 = 2,089.50/x
  3. Step 3: Cross multiply
    3,857.89x = 5,323.90 × 2,089.50
  4. Step 4: Simplify right side
    3,857.89x = 11,124,278.60
  5. Step 5: Solve for x
    x = 11,124,278.60/3,857.89
  6. Step 6: Final answer
    x = 2,883.51

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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.