Home / 2,765.09-3,815.14-1,927.55

Finding the Fourth Proportional to 2,765.09, 3,815.14 and 1,927.55

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Solution

The fourth proportional to 2,765.09, 3,815.14 and 1,927.55 is: 2,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.09 : 3,815.14 = 1,927.55 : x
  2. Step 2: Convert to fraction form
    2,765.09/3,815.14 = 1,927.55/x
  3. Step 3: Cross multiply
    2,765.09x = 3,815.14 × 1,927.55
  4. Step 4: Simplify right side
    2,765.09x = 7,353,873.11
  5. Step 5: Solve for x
    x = 7,353,873.11/2,765.09
  6. Step 6: Final answer
    x = 2,659.54

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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.