Home / 2,990.00-4,127.24-1,811.07

Finding the Fourth Proportional to 2,990.00, 4,127.24 and 1,811.07

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Solution

The fourth proportional to 2,990.00, 4,127.24 and 1,811.07 is: 2,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.00 : 4,127.24 = 1,811.07 : x
  2. Step 2: Convert to fraction form
    2,990.00/4,127.24 = 1,811.07/x
  3. Step 3: Cross multiply
    2,990.00x = 4,127.24 × 1,811.07
  4. Step 4: Simplify right side
    2,990.00x = 7,474,725.07
  5. Step 5: Solve for x
    x = 7,474,725.07/2,990.00
  6. Step 6: Final answer
    x = 2,499.91

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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.