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Finding the Fourth Proportional to 2,671.91, 3,688.26 and 2,391.65

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Solution

The fourth proportional to 2,671.91, 3,688.26 and 2,391.65 is: 3,301.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.91 : 3,688.26 = 2,391.65 : x
  2. Step 2: Convert to fraction form
    2,671.91/3,688.26 = 2,391.65/x
  3. Step 3: Cross multiply
    2,671.91x = 3,688.26 × 2,391.65
  4. Step 4: Simplify right side
    2,671.91x = 8,821,009.80
  5. Step 5: Solve for x
    x = 8,821,009.80/2,671.91
  6. Step 6: Final answer
    x = 3,301.39

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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.