Home / 2,728.01-4,089.56-1,245.71

Finding the Fourth Proportional to 2,728.01, 4,089.56 and 1,245.71

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Solution

The fourth proportional to 2,728.01, 4,089.56 and 1,245.71 is: 1,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.01 : 4,089.56 = 1,245.71 : x
  2. Step 2: Convert to fraction form
    2,728.01/4,089.56 = 1,245.71/x
  3. Step 3: Cross multiply
    2,728.01x = 4,089.56 × 1,245.71
  4. Step 4: Simplify right side
    2,728.01x = 5,094,379.11
  5. Step 5: Solve for x
    x = 5,094,379.11/2,728.01
  6. Step 6: Final answer
    x = 1,867.44

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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.