Home / 2,990.01-4,127.91-1,996.74

Finding the Fourth Proportional to 2,990.01, 4,127.91 and 1,996.74

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Solution

The fourth proportional to 2,990.01, 4,127.91 and 1,996.74 is: 2,756.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.01 : 4,127.91 = 1,996.74 : x
  2. Step 2: Convert to fraction form
    2,990.01/4,127.91 = 1,996.74/x
  3. Step 3: Cross multiply
    2,990.01x = 4,127.91 × 1,996.74
  4. Step 4: Simplify right side
    2,990.01x = 8,242,363.01
  5. Step 5: Solve for x
    x = 8,242,363.01/2,990.01
  6. Step 6: Final answer
    x = 2,756.63

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1.5x scale

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.