Home / 2,389.76-3,290.24-2,039.04

Finding the Fourth Proportional to 2,389.76, 3,290.24 and 2,039.04

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Solution

The fourth proportional to 2,389.76, 3,290.24 and 2,039.04 is: 2,807.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.76 : 3,290.24 = 2,039.04 : x
  2. Step 2: Convert to fraction form
    2,389.76/3,290.24 = 2,039.04/x
  3. Step 3: Cross multiply
    2,389.76x = 3,290.24 × 2,039.04
  4. Step 4: Simplify right side
    2,389.76x = 6,708,930.97
  5. Step 5: Solve for x
    x = 6,708,930.97/2,389.76
  6. Step 6: Final answer
    x = 2,807.37

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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.