Home / 3,954.34-5,457.03-2,161.87

Finding the Fourth Proportional to 3,954.34, 5,457.03 and 2,161.87

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Solution

The fourth proportional to 3,954.34, 5,457.03 and 2,161.87 is: 2,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.34 : 5,457.03 = 2,161.87 : x
  2. Step 2: Convert to fraction form
    3,954.34/5,457.03 = 2,161.87/x
  3. Step 3: Cross multiply
    3,954.34x = 5,457.03 × 2,161.87
  4. Step 4: Simplify right side
    3,954.34x = 11,797,389.45
  5. Step 5: Solve for x
    x = 11,797,389.45/3,954.34
  6. Step 6: Final answer
    x = 2,983.40

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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.