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Finding the Fourth Proportional to 2,615.97, 3,924.18 and 668.16

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Solution

The fourth proportional to 2,615.97, 3,924.18 and 668.16 is: 1,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.97 : 3,924.18 = 668.16 : x
  2. Step 2: Convert to fraction form
    2,615.97/3,924.18 = 668.16/x
  3. Step 3: Cross multiply
    2,615.97x = 3,924.18 × 668.16
  4. Step 4: Simplify right side
    2,615.97x = 2,621,980.11
  5. Step 5: Solve for x
    x = 2,621,980.11/2,615.97
  6. Step 6: Final answer
    x = 1,002.30

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1.5x scale

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.