Home / 5,399.75-7,454.90-3,539.99

Finding the Fourth Proportional to 5,399.75, 7,454.90 and 3,539.99

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Solution

The fourth proportional to 5,399.75, 7,454.90 and 3,539.99 is: 4,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.75 : 7,454.90 = 3,539.99 : x
  2. Step 2: Convert to fraction form
    5,399.75/7,454.90 = 3,539.99/x
  3. Step 3: Cross multiply
    5,399.75x = 7,454.90 × 3,539.99
  4. Step 4: Simplify right side
    5,399.75x = 26,390,253.75
  5. Step 5: Solve for x
    x = 26,390,253.75/5,399.75
  6. Step 6: Final answer
    x = 4,887.31

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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.