Home / 3,914.68-5,402.40-2,146.36

Finding the Fourth Proportional to 3,914.68, 5,402.40 and 2,146.36

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Solution

The fourth proportional to 3,914.68, 5,402.40 and 2,146.36 is: 2,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.68 : 5,402.40 = 2,146.36 : x
  2. Step 2: Convert to fraction form
    3,914.68/5,402.40 = 2,146.36/x
  3. Step 3: Cross multiply
    3,914.68x = 5,402.40 × 2,146.36
  4. Step 4: Simplify right side
    3,914.68x = 11,595,495.26
  5. Step 5: Solve for x
    x = 11,595,495.26/3,914.68
  6. Step 6: Final answer
    x = 2,962.05

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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.