Home / 3,210.82-4,429.50-2,015.08

Finding the Fourth Proportional to 3,210.82, 4,429.50 and 2,015.08

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Solution

The fourth proportional to 3,210.82, 4,429.50 and 2,015.08 is: 2,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.82 : 4,429.50 = 2,015.08 : x
  2. Step 2: Convert to fraction form
    3,210.82/4,429.50 = 2,015.08/x
  3. Step 3: Cross multiply
    3,210.82x = 4,429.50 × 2,015.08
  4. Step 4: Simplify right side
    3,210.82x = 8,925,796.86
  5. Step 5: Solve for x
    x = 8,925,796.86/3,210.82
  6. Step 6: Final answer
    x = 2,779.91

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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.