Home / 2,764.65-4,140.90-1,120.35

Finding the Fourth Proportional to 2,764.65, 4,140.90 and 1,120.35

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Solution

The fourth proportional to 2,764.65, 4,140.90 and 1,120.35 is: 1,678.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.65 : 4,140.90 = 1,120.35 : x
  2. Step 2: Convert to fraction form
    2,764.65/4,140.90 = 1,120.35/x
  3. Step 3: Cross multiply
    2,764.65x = 4,140.90 × 1,120.35
  4. Step 4: Simplify right side
    2,764.65x = 4,639,257.32
  5. Step 5: Solve for x
    x = 4,639,257.32/2,764.65
  6. Step 6: Final answer
    x = 1,678.06

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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.