Home / 2,155.47-3,234.48-2,018.80

Finding the Fourth Proportional to 2,155.47, 3,234.48 and 2,018.80

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Solution

The fourth proportional to 2,155.47, 3,234.48 and 2,018.80 is: 3,029.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.47 : 3,234.48 = 2,018.80 : x
  2. Step 2: Convert to fraction form
    2,155.47/3,234.48 = 2,018.80/x
  3. Step 3: Cross multiply
    2,155.47x = 3,234.48 × 2,018.80
  4. Step 4: Simplify right side
    2,155.47x = 6,529,768.22
  5. Step 5: Solve for x
    x = 6,529,768.22/2,155.47
  6. Step 6: Final answer
    x = 3,029.39

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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.