Home / 5,705.06-7,871.20-3,186.81

Finding the Fourth Proportional to 5,705.06, 7,871.20 and 3,186.81

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Solution

The fourth proportional to 5,705.06, 7,871.20 and 3,186.81 is: 4,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.06 : 7,871.20 = 3,186.81 : x
  2. Step 2: Convert to fraction form
    5,705.06/7,871.20 = 3,186.81/x
  3. Step 3: Cross multiply
    5,705.06x = 7,871.20 × 3,186.81
  4. Step 4: Simplify right side
    5,705.06x = 25,084,018.87
  5. Step 5: Solve for x
    x = 25,084,018.87/5,705.06
  6. Step 6: Final answer
    x = 4,396.80

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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.