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Finding the Fourth Proportional to 6,454.65, 9,681.99 and 2,072.16

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Solution

The fourth proportional to 6,454.65, 9,681.99 and 2,072.16 is: 3,108.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,454.65 : 9,681.99 = 2,072.16 : x
  2. Step 2: Convert to fraction form
    6,454.65/9,681.99 = 2,072.16/x
  3. Step 3: Cross multiply
    6,454.65x = 9,681.99 × 2,072.16
  4. Step 4: Simplify right side
    6,454.65x = 20,062,632.40
  5. Step 5: Solve for x
    x = 20,062,632.40/6,454.65
  6. Step 6: Final answer
    x = 3,108.24

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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.