Home / 6,142.80-9,192.60-4,285.20

Finding the Fourth Proportional to 6,142.80, 9,192.60 and 4,285.20

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Solution

The fourth proportional to 6,142.80, 9,192.60 and 4,285.20 is: 6,412.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,142.80 : 9,192.60 = 4,285.20 : x
  2. Step 2: Convert to fraction form
    6,142.80/9,192.60 = 4,285.20/x
  3. Step 3: Cross multiply
    6,142.80x = 9,192.60 × 4,285.20
  4. Step 4: Simplify right side
    6,142.80x = 39,392,129.52
  5. Step 5: Solve for x
    x = 39,392,129.52/6,142.80
  6. Step 6: Final answer
    x = 6,412.73

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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.