Home / 5,254.89-7,249.28-3,129.21

Finding the Fourth Proportional to 5,254.89, 7,249.28 and 3,129.21

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Solution

The fourth proportional to 5,254.89, 7,249.28 and 3,129.21 is: 4,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,254.89 : 7,249.28 = 3,129.21 : x
  2. Step 2: Convert to fraction form
    5,254.89/7,249.28 = 3,129.21/x
  3. Step 3: Cross multiply
    5,254.89x = 7,249.28 × 3,129.21
  4. Step 4: Simplify right side
    5,254.89x = 22,684,503.82
  5. Step 5: Solve for x
    x = 22,684,503.82/5,254.89
  6. Step 6: Final answer
    x = 4,316.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.