Home / 3,411.78-5,112.86-2,715.35

Finding the Fourth Proportional to 3,411.78, 5,112.86 and 2,715.35

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Solution

The fourth proportional to 3,411.78, 5,112.86 and 2,715.35 is: 4,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.78 : 5,112.86 = 2,715.35 : x
  2. Step 2: Convert to fraction form
    3,411.78/5,112.86 = 2,715.35/x
  3. Step 3: Cross multiply
    3,411.78x = 5,112.86 × 2,715.35
  4. Step 4: Simplify right side
    3,411.78x = 13,883,165.26
  5. Step 5: Solve for x
    x = 13,883,165.26/3,411.78
  6. Step 6: Final answer
    x = 4,069.19

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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.