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Finding the Fourth Proportional to 1,807.74, 2,494.62 and 1,021.71

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Solution

The fourth proportional to 1,807.74, 2,494.62 and 1,021.71 is: 1,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.74 : 2,494.62 = 1,021.71 : x
  2. Step 2: Convert to fraction form
    1,807.74/2,494.62 = 1,021.71/x
  3. Step 3: Cross multiply
    1,807.74x = 2,494.62 × 1,021.71
  4. Step 4: Simplify right side
    1,807.74x = 2,548,778.20
  5. Step 5: Solve for x
    x = 2,548,778.20/1,807.74
  6. Step 6: Final answer
    x = 1,409.93

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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.