Home / 5,706.40-8,558.80-1,811.20

Finding the Fourth Proportional to 5,706.40, 8,558.80 and 1,811.20

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Solution

The fourth proportional to 5,706.40, 8,558.80 and 1,811.20 is: 2,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,706.40 : 8,558.80 = 1,811.20 : x
  2. Step 2: Convert to fraction form
    5,706.40/8,558.80 = 1,811.20/x
  3. Step 3: Cross multiply
    5,706.40x = 8,558.80 × 1,811.20
  4. Step 4: Simplify right side
    5,706.40x = 15,501,698.56
  5. Step 5: Solve for x
    x = 15,501,698.56/5,706.40
  6. Step 6: Final answer
    x = 2,716.55

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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.