Home / 2,577.12-3,556.42-1,398.19

Finding the Fourth Proportional to 2,577.12, 3,556.42 and 1,398.19

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Solution

The fourth proportional to 2,577.12, 3,556.42 and 1,398.19 is: 1,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.12 : 3,556.42 = 1,398.19 : x
  2. Step 2: Convert to fraction form
    2,577.12/3,556.42 = 1,398.19/x
  3. Step 3: Cross multiply
    2,577.12x = 3,556.42 × 1,398.19
  4. Step 4: Simplify right side
    2,577.12x = 4,972,550.88
  5. Step 5: Solve for x
    x = 4,972,550.88/2,577.12
  6. Step 6: Final answer
    x = 1,929.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.