Home / 5,420.93-8,121.80-3,774.29

Finding the Fourth Proportional to 5,420.93, 8,121.80 and 3,774.29

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Solution

The fourth proportional to 5,420.93, 8,121.80 and 3,774.29 is: 5,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.93 : 8,121.80 = 3,774.29 : x
  2. Step 2: Convert to fraction form
    5,420.93/8,121.80 = 3,774.29/x
  3. Step 3: Cross multiply
    5,420.93x = 8,121.80 × 3,774.29
  4. Step 4: Simplify right side
    5,420.93x = 30,653,997.35
  5. Step 5: Solve for x
    x = 30,653,997.35/5,420.93
  6. Step 6: Final answer
    x = 5,654.75

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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.