Home / 1,976.42-2,964.62-515.57

Finding the Fourth Proportional to 1,976.42, 2,964.62 and 515.57

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Solution

The fourth proportional to 1,976.42, 2,964.62 and 515.57 is: 773.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.42 : 2,964.62 = 515.57 : x
  2. Step 2: Convert to fraction form
    1,976.42/2,964.62 = 515.57/x
  3. Step 3: Cross multiply
    1,976.42x = 2,964.62 × 515.57
  4. Step 4: Simplify right side
    1,976.42x = 1,528,455.60
  5. Step 5: Solve for x
    x = 1,528,455.60/1,976.42
  6. Step 6: Final answer
    x = 773.35

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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.