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Finding the Fourth Proportional to 2,741.77, 4,111.62 and 986.28

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Solution

The fourth proportional to 2,741.77, 4,111.62 and 986.28 is: 1,479.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.77 : 4,111.62 = 986.28 : x
  2. Step 2: Convert to fraction form
    2,741.77/4,111.62 = 986.28/x
  3. Step 3: Cross multiply
    2,741.77x = 4,111.62 × 986.28
  4. Step 4: Simplify right side
    2,741.77x = 4,055,208.57
  5. Step 5: Solve for x
    x = 4,055,208.57/2,741.77
  6. Step 6: Final answer
    x = 1,479.05

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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.