Home / 3,421.28-5,127.60-3,384.56

Finding the Fourth Proportional to 3,421.28, 5,127.60 and 3,384.56

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Solution

The fourth proportional to 3,421.28, 5,127.60 and 3,384.56 is: 5,072.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.28 : 5,127.60 = 3,384.56 : x
  2. Step 2: Convert to fraction form
    3,421.28/5,127.60 = 3,384.56/x
  3. Step 3: Cross multiply
    3,421.28x = 5,127.60 × 3,384.56
  4. Step 4: Simplify right side
    3,421.28x = 17,354,669.86
  5. Step 5: Solve for x
    x = 17,354,669.86/3,421.28
  6. Step 6: Final answer
    x = 5,072.57

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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.