Home / 2,577.11-3,556.40-1,398.17

Finding the Fourth Proportional to 2,577.11, 3,556.40 and 1,398.17

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Solution

The fourth proportional to 2,577.11, 3,556.40 and 1,398.17 is: 1,929.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.11 : 3,556.40 = 1,398.17 : x
  2. Step 2: Convert to fraction form
    2,577.11/3,556.40 = 1,398.17/x
  3. Step 3: Cross multiply
    2,577.11x = 3,556.40 × 1,398.17
  4. Step 4: Simplify right side
    2,577.11x = 4,972,427.02
  5. Step 5: Solve for x
    x = 4,972,427.02/2,577.11
  6. Step 6: Final answer
    x = 1,929.46

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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.