Home / 3,687.72-5,083.66-2,900.40

Finding the Fourth Proportional to 3,687.72, 5,083.66 and 2,900.40

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Solution

The fourth proportional to 3,687.72, 5,083.66 and 2,900.40 is: 3,998.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.72 : 5,083.66 = 2,900.40 : x
  2. Step 2: Convert to fraction form
    3,687.72/5,083.66 = 2,900.40/x
  3. Step 3: Cross multiply
    3,687.72x = 5,083.66 × 2,900.40
  4. Step 4: Simplify right side
    3,687.72x = 14,744,647.46
  5. Step 5: Solve for x
    x = 14,744,647.46/3,687.72
  6. Step 6: Final answer
    x = 3,998.31

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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.