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Finding the Fourth Proportional to 6,502.75, 8,970.15 and 3,986.08

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Solution

The fourth proportional to 6,502.75, 8,970.15 and 3,986.08 is: 5,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,502.75 : 8,970.15 = 3,986.08 : x
  2. Step 2: Convert to fraction form
    6,502.75/8,970.15 = 3,986.08/x
  3. Step 3: Cross multiply
    6,502.75x = 8,970.15 × 3,986.08
  4. Step 4: Simplify right side
    6,502.75x = 35,755,735.51
  5. Step 5: Solve for x
    x = 35,755,735.51/6,502.75
  6. Step 6: Final answer
    x = 5,498.56

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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.