Home / 2,619.39-3,929.13-1,038.03

Finding the Fourth Proportional to 2,619.39, 3,929.13 and 1,038.03

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Solution

The fourth proportional to 2,619.39, 3,929.13 and 1,038.03 is: 1,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.39 : 3,929.13 = 1,038.03 : x
  2. Step 2: Convert to fraction form
    2,619.39/3,929.13 = 1,038.03/x
  3. Step 3: Cross multiply
    2,619.39x = 3,929.13 × 1,038.03
  4. Step 4: Simplify right side
    2,619.39x = 4,078,554.81
  5. Step 5: Solve for x
    x = 4,078,554.81/2,619.39
  6. Step 6: Final answer
    x = 1,557.06

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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.