Home / 5,712.96-8,570.40-1,818.56

Finding the Fourth Proportional to 5,712.96, 8,570.40 and 1,818.56

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Solution

The fourth proportional to 5,712.96, 8,570.40 and 1,818.56 is: 2,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,712.96 : 8,570.40 = 1,818.56 : x
  2. Step 2: Convert to fraction form
    5,712.96/8,570.40 = 1,818.56/x
  3. Step 3: Cross multiply
    5,712.96x = 8,570.40 × 1,818.56
  4. Step 4: Simplify right side
    5,712.96x = 15,585,786.62
  5. Step 5: Solve for x
    x = 15,585,786.62/5,712.96
  6. Step 6: Final answer
    x = 2,728.15

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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.