Home / 3,678.04-5,078.12-2,837.28

Finding the Fourth Proportional to 3,678.04, 5,078.12 and 2,837.28

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Solution

The fourth proportional to 3,678.04, 5,078.12 and 2,837.28 is: 3,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.04 : 5,078.12 = 2,837.28 : x
  2. Step 2: Convert to fraction form
    3,678.04/5,078.12 = 2,837.28/x
  3. Step 3: Cross multiply
    3,678.04x = 5,078.12 × 2,837.28
  4. Step 4: Simplify right side
    3,678.04x = 14,408,048.31
  5. Step 5: Solve for x
    x = 14,408,048.31/3,678.04
  6. Step 6: Final answer
    x = 3,917.32

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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.