Home / 2,054.80-3,077.40-1,277.20

Finding the Fourth Proportional to 2,054.80, 3,077.40 and 1,277.20

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Solution

The fourth proportional to 2,054.80, 3,077.40 and 1,277.20 is: 1,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,054.80 : 3,077.40 = 1,277.20 : x
  2. Step 2: Convert to fraction form
    2,054.80/3,077.40 = 1,277.20/x
  3. Step 3: Cross multiply
    2,054.80x = 3,077.40 × 1,277.20
  4. Step 4: Simplify right side
    2,054.80x = 3,930,455.28
  5. Step 5: Solve for x
    x = 3,930,455.28/2,054.80
  6. Step 6: Final answer
    x = 1,912.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.