Home / 2,776.56-4,166.64-1,317.36

Finding the Fourth Proportional to 2,776.56, 4,166.64 and 1,317.36

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Solution

The fourth proportional to 2,776.56, 4,166.64 and 1,317.36 is: 1,976.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.56 : 4,166.64 = 1,317.36 : x
  2. Step 2: Convert to fraction form
    2,776.56/4,166.64 = 1,317.36/x
  3. Step 3: Cross multiply
    2,776.56x = 4,166.64 × 1,317.36
  4. Step 4: Simplify right side
    2,776.56x = 5,488,964.87
  5. Step 5: Solve for x
    x = 5,488,964.87/2,776.56
  6. Step 6: Final answer
    x = 1,976.89

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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.