Home / 2,389.88-3,298.97-1,505.51

Finding the Fourth Proportional to 2,389.88, 3,298.97 and 1,505.51

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Solution

The fourth proportional to 2,389.88, 3,298.97 and 1,505.51 is: 2,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.88 : 3,298.97 = 1,505.51 : x
  2. Step 2: Convert to fraction form
    2,389.88/3,298.97 = 1,505.51/x
  3. Step 3: Cross multiply
    2,389.88x = 3,298.97 × 1,505.51
  4. Step 4: Simplify right side
    2,389.88x = 4,966,632.32
  5. Step 5: Solve for x
    x = 4,966,632.32/2,389.88
  6. Step 6: Final answer
    x = 2,078.19

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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.