Home / 5,415.48-8,114.72-4,185.90

Finding the Fourth Proportional to 5,415.48, 8,114.72 and 4,185.90

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Solution

The fourth proportional to 5,415.48, 8,114.72 and 4,185.90 is: 6,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.48 : 8,114.72 = 4,185.90 : x
  2. Step 2: Convert to fraction form
    5,415.48/8,114.72 = 4,185.90/x
  3. Step 3: Cross multiply
    5,415.48x = 8,114.72 × 4,185.90
  4. Step 4: Simplify right side
    5,415.48x = 33,967,385.52
  5. Step 5: Solve for x
    x = 33,967,385.52/5,415.48
  6. Step 6: Final answer
    x = 6,272.28

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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.