Home / 7,578.34-11,371.26-3,421.39

Finding the Fourth Proportional to 7,578.34, 11,371.26 and 3,421.39

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Solution

The fourth proportional to 7,578.34, 11,371.26 and 3,421.39 is: 5,133.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.34 : 11,371.26 = 3,421.39 : x
  2. Step 2: Convert to fraction form
    7,578.34/11,371.26 = 3,421.39/x
  3. Step 3: Cross multiply
    7,578.34x = 11,371.26 × 3,421.39
  4. Step 4: Simplify right side
    7,578.34x = 38,905,515.25
  5. Step 5: Solve for x
    x = 38,905,515.25/7,578.34
  6. Step 6: Final answer
    x = 5,133.78

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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.