Home / 3,924.06-5,415.30-2,155.83

Finding the Fourth Proportional to 3,924.06, 5,415.30 and 2,155.83

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Solution

The fourth proportional to 3,924.06, 5,415.30 and 2,155.83 is: 2,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.06 : 5,415.30 = 2,155.83 : x
  2. Step 2: Convert to fraction form
    3,924.06/5,415.30 = 2,155.83/x
  3. Step 3: Cross multiply
    3,924.06x = 5,415.30 × 2,155.83
  4. Step 4: Simplify right side
    3,924.06x = 11,674,466.20
  5. Step 5: Solve for x
    x = 11,674,466.20/3,924.06
  6. Step 6: Final answer
    x = 2,975.10

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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.