Home / 3,924.63-5,415.86-2,156.11

Finding the Fourth Proportional to 3,924.63, 5,415.86 and 2,156.11

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Solution

The fourth proportional to 3,924.63, 5,415.86 and 2,156.11 is: 2,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.63 : 5,415.86 = 2,156.11 : x
  2. Step 2: Convert to fraction form
    3,924.63/5,415.86 = 2,156.11/x
  3. Step 3: Cross multiply
    3,924.63x = 5,415.86 × 2,156.11
  4. Step 4: Simplify right side
    3,924.63x = 11,677,181.76
  5. Step 5: Solve for x
    x = 11,677,181.76/3,924.63
  6. Step 6: Final answer
    x = 2,975.36

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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.