Home / 3,914.79-5,402.39-2,146.40

Finding the Fourth Proportional to 3,914.79, 5,402.39 and 2,146.40

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Solution

The fourth proportional to 3,914.79, 5,402.39 and 2,146.40 is: 2,962.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.79 : 5,402.39 = 2,146.40 : x
  2. Step 2: Convert to fraction form
    3,914.79/5,402.39 = 2,146.40/x
  3. Step 3: Cross multiply
    3,914.79x = 5,402.39 × 2,146.40
  4. Step 4: Simplify right side
    3,914.79x = 11,595,668.25
  5. Step 5: Solve for x
    x = 11,595,668.25/3,914.79
  6. Step 6: Final answer
    x = 2,962.02

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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.