Home / 2,990.43-4,127.02-1,731.83

Finding the Fourth Proportional to 2,990.43, 4,127.02 and 1,731.83

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Solution

The fourth proportional to 2,990.43, 4,127.02 and 1,731.83 is: 2,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.43 : 4,127.02 = 1,731.83 : x
  2. Step 2: Convert to fraction form
    2,990.43/4,127.02 = 1,731.83/x
  3. Step 3: Cross multiply
    2,990.43x = 4,127.02 × 1,731.83
  4. Step 4: Simplify right side
    2,990.43x = 7,147,272.08
  5. Step 5: Solve for x
    x = 7,147,272.08/2,990.43
  6. Step 6: Final answer
    x = 2,390.05

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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.