Home / 2,927.66-4,039.70-2,779.92

Finding the Fourth Proportional to 2,927.66, 4,039.70 and 2,779.92

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Solution

The fourth proportional to 2,927.66, 4,039.70 and 2,779.92 is: 3,835.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.66 : 4,039.70 = 2,779.92 : x
  2. Step 2: Convert to fraction form
    2,927.66/4,039.70 = 2,779.92/x
  3. Step 3: Cross multiply
    2,927.66x = 4,039.70 × 2,779.92
  4. Step 4: Simplify right side
    2,927.66x = 11,230,028.92
  5. Step 5: Solve for x
    x = 11,230,028.92/2,927.66
  6. Step 6: Final answer
    x = 3,835.84

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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.