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Finding the Fourth Proportional to 2,673.90, 3,689.96 and 1,478.97

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Solution

The fourth proportional to 2,673.90, 3,689.96 and 1,478.97 is: 2,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.90 : 3,689.96 = 1,478.97 : x
  2. Step 2: Convert to fraction form
    2,673.90/3,689.96 = 1,478.97/x
  3. Step 3: Cross multiply
    2,673.90x = 3,689.96 × 1,478.97
  4. Step 4: Simplify right side
    2,673.90x = 5,457,332.75
  5. Step 5: Solve for x
    x = 5,457,332.75/2,673.90
  6. Step 6: Final answer
    x = 2,040.96

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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.