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Finding the Fourth Proportional to 6,376.34, 8,802.54 and 3,987.65

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Solution

The fourth proportional to 6,376.34, 8,802.54 and 3,987.65 is: 5,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,376.34 : 8,802.54 = 3,987.65 : x
  2. Step 2: Convert to fraction form
    6,376.34/8,802.54 = 3,987.65/x
  3. Step 3: Cross multiply
    6,376.34x = 8,802.54 × 3,987.65
  4. Step 4: Simplify right side
    6,376.34x = 35,101,404.62
  5. Step 5: Solve for x
    x = 35,101,404.62/6,376.34
  6. Step 6: Final answer
    x = 5,504.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.