Home / 6,455.18-9,681.85-2,072.07

Finding the Fourth Proportional to 6,455.18, 9,681.85 and 2,072.07

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Solution

The fourth proportional to 6,455.18, 9,681.85 and 2,072.07 is: 3,107.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.18 : 9,681.85 = 2,072.07 : x
  2. Step 2: Convert to fraction form
    6,455.18/9,681.85 = 2,072.07/x
  3. Step 3: Cross multiply
    6,455.18x = 9,681.85 × 2,072.07
  4. Step 4: Simplify right side
    6,455.18x = 20,061,470.93
  5. Step 5: Solve for x
    x = 20,061,470.93/6,455.18
  6. Step 6: Final answer
    x = 3,107.81

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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.