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Finding the Fourth Proportional to 3,498.78, 5,246.15 and 1,740.20

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Solution

The fourth proportional to 3,498.78, 5,246.15 and 1,740.20 is: 2,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,498.78 : 5,246.15 = 1,740.20 : x
  2. Step 2: Convert to fraction form
    3,498.78/5,246.15 = 1,740.20/x
  3. Step 3: Cross multiply
    3,498.78x = 5,246.15 × 1,740.20
  4. Step 4: Simplify right side
    3,498.78x = 9,129,367.70
  5. Step 5: Solve for x
    x = 9,129,367.70/3,498.78
  6. Step 6: Final answer
    x = 2,609.30

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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.