Home / 2,789.28-3,840.44-2,368.76

Finding the Fourth Proportional to 2,789.28, 3,840.44 and 2,368.76

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Solution

The fourth proportional to 2,789.28, 3,840.44 and 2,368.76 is: 3,261.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.28 : 3,840.44 = 2,368.76 : x
  2. Step 2: Convert to fraction form
    2,789.28/3,840.44 = 2,368.76/x
  3. Step 3: Cross multiply
    2,789.28x = 3,840.44 × 2,368.76
  4. Step 4: Simplify right side
    2,789.28x = 9,097,080.65
  5. Step 5: Solve for x
    x = 9,097,080.65/2,789.28
  6. Step 6: Final answer
    x = 3,261.44

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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.