Home / 6,415.94-9,625.20-3,129.10

Finding the Fourth Proportional to 6,415.94, 9,625.20 and 3,129.10

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Solution

The fourth proportional to 6,415.94, 9,625.20 and 3,129.10 is: 4,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.94 : 9,625.20 = 3,129.10 : x
  2. Step 2: Convert to fraction form
    6,415.94/9,625.20 = 3,129.10/x
  3. Step 3: Cross multiply
    6,415.94x = 9,625.20 × 3,129.10
  4. Step 4: Simplify right side
    6,415.94x = 30,118,177.52
  5. Step 5: Solve for x
    x = 30,118,177.52/6,415.94
  6. Step 6: Final answer
    x = 4,694.27

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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.