Home / 5,643.20-8,456.70-4,150.78

Finding the Fourth Proportional to 5,643.20, 8,456.70 and 4,150.78

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Solution

The fourth proportional to 5,643.20, 8,456.70 and 4,150.78 is: 6,220.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.20 : 8,456.70 = 4,150.78 : x
  2. Step 2: Convert to fraction form
    5,643.20/8,456.70 = 4,150.78/x
  3. Step 3: Cross multiply
    5,643.20x = 8,456.70 × 4,150.78
  4. Step 4: Simplify right side
    5,643.20x = 35,101,858.94
  5. Step 5: Solve for x
    x = 35,101,858.94/5,643.20
  6. Step 6: Final answer
    x = 6,220.20

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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.