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Finding the Fourth Proportional to 1,807.73, 2,494.68 and 979.73

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Solution

The fourth proportional to 1,807.73, 2,494.68 and 979.73 is: 1,352.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.73 : 2,494.68 = 979.73 : x
  2. Step 2: Convert to fraction form
    1,807.73/2,494.68 = 979.73/x
  3. Step 3: Cross multiply
    1,807.73x = 2,494.68 × 979.73
  4. Step 4: Simplify right side
    1,807.73x = 2,444,119.07
  5. Step 5: Solve for x
    x = 2,444,119.07/1,807.73
  6. Step 6: Final answer
    x = 1,352.04

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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.