Home / 2,386.39-3,579.59-1,089.31

Finding the Fourth Proportional to 2,386.39, 3,579.59 and 1,089.31

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Solution

The fourth proportional to 2,386.39, 3,579.59 and 1,089.31 is: 1,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.39 : 3,579.59 = 1,089.31 : x
  2. Step 2: Convert to fraction form
    2,386.39/3,579.59 = 1,089.31/x
  3. Step 3: Cross multiply
    2,386.39x = 3,579.59 × 1,089.31
  4. Step 4: Simplify right side
    2,386.39x = 3,899,283.18
  5. Step 5: Solve for x
    x = 3,899,283.18/2,386.39
  6. Step 6: Final answer
    x = 1,633.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.