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Finding the Fourth Proportional to 1,673.22, 2,309.19 and 974.82

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Solution

The fourth proportional to 1,673.22, 2,309.19 and 974.82 is: 1,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.22 : 2,309.19 = 974.82 : x
  2. Step 2: Convert to fraction form
    1,673.22/2,309.19 = 974.82/x
  3. Step 3: Cross multiply
    1,673.22x = 2,309.19 × 974.82
  4. Step 4: Simplify right side
    1,673.22x = 2,251,044.60
  5. Step 5: Solve for x
    x = 2,251,044.60/1,673.22
  6. Step 6: Final answer
    x = 1,345.34

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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.