Home / 3,421.47-5,131.13-2,171.19

Finding the Fourth Proportional to 3,421.47, 5,131.13 and 2,171.19

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Solution

The fourth proportional to 3,421.47, 5,131.13 and 2,171.19 is: 3,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.47 : 5,131.13 = 2,171.19 : x
  2. Step 2: Convert to fraction form
    3,421.47/5,131.13 = 2,171.19/x
  3. Step 3: Cross multiply
    3,421.47x = 5,131.13 × 2,171.19
  4. Step 4: Simplify right side
    3,421.47x = 11,140,647.29
  5. Step 5: Solve for x
    x = 11,140,647.29/3,421.47
  6. Step 6: Final answer
    x = 3,256.10

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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.