Home / 2,615.80-3,923.76-668.02

Finding the Fourth Proportional to 2,615.80, 3,923.76 and 668.02

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Solution

The fourth proportional to 2,615.80, 3,923.76 and 668.02 is: 1,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.80 : 3,923.76 = 668.02 : x
  2. Step 2: Convert to fraction form
    2,615.80/3,923.76 = 668.02/x
  3. Step 3: Cross multiply
    2,615.80x = 3,923.76 × 668.02
  4. Step 4: Simplify right side
    2,615.80x = 2,621,150.16
  5. Step 5: Solve for x
    x = 2,621,150.16/2,615.80
  6. Step 6: Final answer
    x = 1,002.05

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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.