Home / 5,115.07-7,670.49-1,603.90

Finding the Fourth Proportional to 5,115.07, 7,670.49 and 1,603.90

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Solution

The fourth proportional to 5,115.07, 7,670.49 and 1,603.90 is: 2,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.07 : 7,670.49 = 1,603.90 : x
  2. Step 2: Convert to fraction form
    5,115.07/7,670.49 = 1,603.90/x
  3. Step 3: Cross multiply
    5,115.07x = 7,670.49 × 1,603.90
  4. Step 4: Simplify right side
    5,115.07x = 12,302,698.91
  5. Step 5: Solve for x
    x = 12,302,698.91/5,115.07
  6. Step 6: Final answer
    x = 2,405.19

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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.