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Finding the Fourth Proportional to 3,185.29, 4,777.39 and 876.25

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Solution

The fourth proportional to 3,185.29, 4,777.39 and 876.25 is: 1,314.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.29 : 4,777.39 = 876.25 : x
  2. Step 2: Convert to fraction form
    3,185.29/4,777.39 = 876.25/x
  3. Step 3: Cross multiply
    3,185.29x = 4,777.39 × 876.25
  4. Step 4: Simplify right side
    3,185.29x = 4,186,187.99
  5. Step 5: Solve for x
    x = 4,186,187.99/3,185.29
  6. Step 6: Final answer
    x = 1,314.23

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1.5x scale

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.