Home / 2,621.12-3,615.64-1,558.56

Finding the Fourth Proportional to 2,621.12, 3,615.64 and 1,558.56

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Solution

The fourth proportional to 2,621.12, 3,615.64 and 1,558.56 is: 2,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.12 : 3,615.64 = 1,558.56 : x
  2. Step 2: Convert to fraction form
    2,621.12/3,615.64 = 1,558.56/x
  3. Step 3: Cross multiply
    2,621.12x = 3,615.64 × 1,558.56
  4. Step 4: Simplify right side
    2,621.12x = 5,635,191.88
  5. Step 5: Solve for x
    x = 5,635,191.88/2,621.12
  6. Step 6: Final answer
    x = 2,149.92

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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.