Home / 3,498.60-5,239.80-2,186.40

Finding the Fourth Proportional to 3,498.60, 5,239.80 and 2,186.40

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Solution

The fourth proportional to 3,498.60, 5,239.80 and 2,186.40 is: 3,274.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,498.60 : 5,239.80 = 2,186.40 : x
  2. Step 2: Convert to fraction form
    3,498.60/5,239.80 = 2,186.40/x
  3. Step 3: Cross multiply
    3,498.60x = 5,239.80 × 2,186.40
  4. Step 4: Simplify right side
    3,498.60x = 11,456,298.72
  5. Step 5: Solve for x
    x = 11,456,298.72/3,498.60
  6. Step 6: Final answer
    x = 3,274.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.