Home / 7,415.15-11,120.90-2,150.15

Finding the Fourth Proportional to 7,415.15, 11,120.90 and 2,150.15

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Solution

The fourth proportional to 7,415.15, 11,120.90 and 2,150.15 is: 3,224.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.15 : 11,120.90 = 2,150.15 : x
  2. Step 2: Convert to fraction form
    7,415.15/11,120.90 = 2,150.15/x
  3. Step 3: Cross multiply
    7,415.15x = 11,120.90 × 2,150.15
  4. Step 4: Simplify right side
    7,415.15x = 23,911,536.78
  5. Step 5: Solve for x
    x = 23,911,536.78/7,415.15
  6. Step 6: Final answer
    x = 3,224.69

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1.5x scale

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.