Home / 2,990.96-4,127.52-1,664.72

Finding the Fourth Proportional to 2,990.96, 4,127.52 and 1,664.72

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Solution

The fourth proportional to 2,990.96, 4,127.52 and 1,664.72 is: 2,297.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.96 : 4,127.52 = 1,664.72 : x
  2. Step 2: Convert to fraction form
    2,990.96/4,127.52 = 1,664.72/x
  3. Step 3: Cross multiply
    2,990.96x = 4,127.52 × 1,664.72
  4. Step 4: Simplify right side
    2,990.96x = 6,871,165.09
  5. Step 5: Solve for x
    x = 6,871,165.09/2,990.96
  6. Step 6: Final answer
    x = 2,297.31

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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.