Home / 2,209.12-3,048.86-1,277.62

Finding the Fourth Proportional to 2,209.12, 3,048.86 and 1,277.62

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Solution

The fourth proportional to 2,209.12, 3,048.86 and 1,277.62 is: 1,763.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.12 : 3,048.86 = 1,277.62 : x
  2. Step 2: Convert to fraction form
    2,209.12/3,048.86 = 1,277.62/x
  3. Step 3: Cross multiply
    2,209.12x = 3,048.86 × 1,277.62
  4. Step 4: Simplify right side
    2,209.12x = 3,895,284.51
  5. Step 5: Solve for x
    x = 3,895,284.51/2,209.12
  6. Step 6: Final answer
    x = 1,763.27

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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.