Home / 2,120.15-3,177.60-1,537.15

Finding the Fourth Proportional to 2,120.15, 3,177.60 and 1,537.15

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Solution

The fourth proportional to 2,120.15, 3,177.60 and 1,537.15 is: 2,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.15 : 3,177.60 = 1,537.15 : x
  2. Step 2: Convert to fraction form
    2,120.15/3,177.60 = 1,537.15/x
  3. Step 3: Cross multiply
    2,120.15x = 3,177.60 × 1,537.15
  4. Step 4: Simplify right side
    2,120.15x = 4,884,453.06
  5. Step 5: Solve for x
    x = 4,884,453.06/2,120.15
  6. Step 6: Final answer
    x = 2,303.83

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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.