Home / 3,178.39-4,756.54-2,815.51

Finding the Fourth Proportional to 3,178.39, 4,756.54 and 2,815.51

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Solution

The fourth proportional to 3,178.39, 4,756.54 and 2,815.51 is: 4,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.39 : 4,756.54 = 2,815.51 : x
  2. Step 2: Convert to fraction form
    3,178.39/4,756.54 = 2,815.51/x
  3. Step 3: Cross multiply
    3,178.39x = 4,756.54 × 2,815.51
  4. Step 4: Simplify right side
    3,178.39x = 13,392,085.94
  5. Step 5: Solve for x
    x = 13,392,085.94/3,178.39
  6. Step 6: Final answer
    x = 4,213.48

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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.