Home / 2,985.95-4,120.77-1,659.87

Finding the Fourth Proportional to 2,985.95, 4,120.77 and 1,659.87

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Solution

The fourth proportional to 2,985.95, 4,120.77 and 1,659.87 is: 2,290.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.95 : 4,120.77 = 1,659.87 : x
  2. Step 2: Convert to fraction form
    2,985.95/4,120.77 = 1,659.87/x
  3. Step 3: Cross multiply
    2,985.95x = 4,120.77 × 1,659.87
  4. Step 4: Simplify right side
    2,985.95x = 6,839,942.50
  5. Step 5: Solve for x
    x = 6,839,942.50/2,985.95
  6. Step 6: Final answer
    x = 2,290.71

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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.