Home / 2,578.09-3,556.11-1,780.07

Finding the Fourth Proportional to 2,578.09, 3,556.11 and 1,780.07

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Solution

The fourth proportional to 2,578.09, 3,556.11 and 1,780.07 is: 2,455.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.09 : 3,556.11 = 1,780.07 : x
  2. Step 2: Convert to fraction form
    2,578.09/3,556.11 = 1,780.07/x
  3. Step 3: Cross multiply
    2,578.09x = 3,556.11 × 1,780.07
  4. Step 4: Simplify right side
    2,578.09x = 6,330,113.62
  5. Step 5: Solve for x
    x = 6,330,113.62/2,578.09
  6. Step 6: Final answer
    x = 2,455.35

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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.