Home / 2,577.30-3,556.70-1,398.39

Finding the Fourth Proportional to 2,577.30, 3,556.70 and 1,398.39

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Solution

The fourth proportional to 2,577.30, 3,556.70 and 1,398.39 is: 1,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.30 : 3,556.70 = 1,398.39 : x
  2. Step 2: Convert to fraction form
    2,577.30/3,556.70 = 1,398.39/x
  3. Step 3: Cross multiply
    2,577.30x = 3,556.70 × 1,398.39
  4. Step 4: Simplify right side
    2,577.30x = 4,973,653.71
  5. Step 5: Solve for x
    x = 4,973,653.71/2,577.30
  6. Step 6: Final answer
    x = 1,929.79

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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.