Home / 2,990.73-4,127.04-1,871.64

Finding the Fourth Proportional to 2,990.73, 4,127.04 and 1,871.64

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Solution

The fourth proportional to 2,990.73, 4,127.04 and 1,871.64 is: 2,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.73 : 4,127.04 = 1,871.64 : x
  2. Step 2: Convert to fraction form
    2,990.73/4,127.04 = 1,871.64/x
  3. Step 3: Cross multiply
    2,990.73x = 4,127.04 × 1,871.64
  4. Step 4: Simplify right side
    2,990.73x = 7,724,333.15
  5. Step 5: Solve for x
    x = 7,724,333.15/2,990.73
  6. Step 6: Final answer
    x = 2,582.76

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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.