Home / 1,705.04-2,556.64-779.55

Finding the Fourth Proportional to 1,705.04, 2,556.64 and 779.55

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Solution

The fourth proportional to 1,705.04, 2,556.64 and 779.55 is: 1,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.04 : 2,556.64 = 779.55 : x
  2. Step 2: Convert to fraction form
    1,705.04/2,556.64 = 779.55/x
  3. Step 3: Cross multiply
    1,705.04x = 2,556.64 × 779.55
  4. Step 4: Simplify right side
    1,705.04x = 1,993,028.71
  5. Step 5: Solve for x
    x = 1,993,028.71/1,705.04
  6. Step 6: Final answer
    x = 1,168.90

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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.