Home / 2,389.18-3,288.09-2,020.99

Finding the Fourth Proportional to 2,389.18, 3,288.09 and 2,020.99

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Solution

The fourth proportional to 2,389.18, 3,288.09 and 2,020.99 is: 2,781.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.18 : 3,288.09 = 2,020.99 : x
  2. Step 2: Convert to fraction form
    2,389.18/3,288.09 = 2,020.99/x
  3. Step 3: Cross multiply
    2,389.18x = 3,288.09 × 2,020.99
  4. Step 4: Simplify right side
    2,389.18x = 6,645,197.01
  5. Step 5: Solve for x
    x = 6,645,197.01/2,389.18
  6. Step 6: Final answer
    x = 2,781.37

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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.