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Finding the Fourth Proportional to 6,260.65, 8,636.25 and 3,987.75

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Solution

The fourth proportional to 6,260.65, 8,636.25 and 3,987.75 is: 5,500.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,260.65 : 8,636.25 = 3,987.75 : x
  2. Step 2: Convert to fraction form
    6,260.65/8,636.25 = 3,987.75/x
  3. Step 3: Cross multiply
    6,260.65x = 8,636.25 × 3,987.75
  4. Step 4: Simplify right side
    6,260.65x = 34,439,253.28
  5. Step 5: Solve for x
    x = 34,439,253.28/6,260.65
  6. Step 6: Final answer
    x = 5,500.91

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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.