Home / 2,985.77-4,120.62-1,659.73

Finding the Fourth Proportional to 2,985.77, 4,120.62 and 1,659.73

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Solution

The fourth proportional to 2,985.77, 4,120.62 and 1,659.73 is: 2,290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.77 : 4,120.62 = 1,659.73 : x
  2. Step 2: Convert to fraction form
    2,985.77/4,120.62 = 1,659.73/x
  3. Step 3: Cross multiply
    2,985.77x = 4,120.62 × 1,659.73
  4. Step 4: Simplify right side
    2,985.77x = 6,839,100.87
  5. Step 5: Solve for x
    x = 6,839,100.87/2,985.77
  6. Step 6: Final answer
    x = 2,290.57

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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.