Home / 2,620.81-3,931.66-1,304.64

Finding the Fourth Proportional to 2,620.81, 3,931.66 and 1,304.64

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Solution

The fourth proportional to 2,620.81, 3,931.66 and 1,304.64 is: 1,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.81 : 3,931.66 = 1,304.64 : x
  2. Step 2: Convert to fraction form
    2,620.81/3,931.66 = 1,304.64/x
  3. Step 3: Cross multiply
    2,620.81x = 3,931.66 × 1,304.64
  4. Step 4: Simplify right side
    2,620.81x = 5,129,400.90
  5. Step 5: Solve for x
    x = 5,129,400.90/2,620.81
  6. Step 6: Final answer
    x = 1,957.18

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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.