Home / 3,421.14-5,134.11-1,690.26

Finding the Fourth Proportional to 3,421.14, 5,134.11 and 1,690.26

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Solution

The fourth proportional to 3,421.14, 5,134.11 and 1,690.26 is: 2,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.14 : 5,134.11 = 1,690.26 : x
  2. Step 2: Convert to fraction form
    3,421.14/5,134.11 = 1,690.26/x
  3. Step 3: Cross multiply
    3,421.14x = 5,134.11 × 1,690.26
  4. Step 4: Simplify right side
    3,421.14x = 8,677,980.77
  5. Step 5: Solve for x
    x = 8,677,980.77/3,421.14
  6. Step 6: Final answer
    x = 2,536.58

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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.