Home / 2,990.53-4,127.25-1,811.62

Finding the Fourth Proportional to 2,990.53, 4,127.25 and 1,811.62

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Solution

The fourth proportional to 2,990.53, 4,127.25 and 1,811.62 is: 2,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.53 : 4,127.25 = 1,811.62 : x
  2. Step 2: Convert to fraction form
    2,990.53/4,127.25 = 1,811.62/x
  3. Step 3: Cross multiply
    2,990.53x = 4,127.25 × 1,811.62
  4. Step 4: Simplify right side
    2,990.53x = 7,477,008.65
  5. Step 5: Solve for x
    x = 7,477,008.65/2,990.53
  6. Step 6: Final answer
    x = 2,500.23

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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.