Home / 2,764.77-3,815.47-1,505.76

Finding the Fourth Proportional to 2,764.77, 3,815.47 and 1,505.76

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Solution

The fourth proportional to 2,764.77, 3,815.47 and 1,505.76 is: 2,077.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.77 : 3,815.47 = 1,505.76 : x
  2. Step 2: Convert to fraction form
    2,764.77/3,815.47 = 1,505.76/x
  3. Step 3: Cross multiply
    2,764.77x = 3,815.47 × 1,505.76
  4. Step 4: Simplify right side
    2,764.77x = 5,745,169.68
  5. Step 5: Solve for x
    x = 5,745,169.68/2,764.77
  6. Step 6: Final answer
    x = 2,077.99

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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.