Home / 3,421.52-5,131.64-2,130.96

Finding the Fourth Proportional to 3,421.52, 5,131.64 and 2,130.96

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Solution

The fourth proportional to 3,421.52, 5,131.64 and 2,130.96 is: 3,196.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.52 : 5,131.64 = 2,130.96 : x
  2. Step 2: Convert to fraction form
    3,421.52/5,131.64 = 2,130.96/x
  3. Step 3: Cross multiply
    3,421.52x = 5,131.64 × 2,130.96
  4. Step 4: Simplify right side
    3,421.52x = 10,935,319.57
  5. Step 5: Solve for x
    x = 10,935,319.57/3,421.52
  6. Step 6: Final answer
    x = 3,196.04

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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.