Home / 3,423.24-5,131.26-1,688.28

Finding the Fourth Proportional to 3,423.24, 5,131.26 and 1,688.28

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Solution

The fourth proportional to 3,423.24, 5,131.26 and 1,688.28 is: 2,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.24 : 5,131.26 = 1,688.28 : x
  2. Step 2: Convert to fraction form
    3,423.24/5,131.26 = 1,688.28/x
  3. Step 3: Cross multiply
    3,423.24x = 5,131.26 × 1,688.28
  4. Step 4: Simplify right side
    3,423.24x = 8,663,003.63
  5. Step 5: Solve for x
    x = 8,663,003.63/3,423.24
  6. Step 6: Final answer
    x = 2,530.64

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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.