Home / 2,115.16-3,174.60-1,005.93

Finding the Fourth Proportional to 2,115.16, 3,174.60 and 1,005.93

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Solution

The fourth proportional to 2,115.16, 3,174.60 and 1,005.93 is: 1,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.16 : 3,174.60 = 1,005.93 : x
  2. Step 2: Convert to fraction form
    2,115.16/3,174.60 = 1,005.93/x
  3. Step 3: Cross multiply
    2,115.16x = 3,174.60 × 1,005.93
  4. Step 4: Simplify right side
    2,115.16x = 3,193,430.80
  5. Step 5: Solve for x
    x = 3,193,430.80/2,115.16
  6. Step 6: Final answer
    x = 1,509.78

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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.