Home / 9,542.58-13,174.85-7,778.38

Finding the Fourth Proportional to 9,542.58, 13,174.85 and 7,778.38

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Solution

The fourth proportional to 9,542.58, 13,174.85 and 7,778.38 is: 10,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,542.58 : 13,174.85 = 7,778.38 : x
  2. Step 2: Convert to fraction form
    9,542.58/13,174.85 = 7,778.38/x
  3. Step 3: Cross multiply
    9,542.58x = 13,174.85 × 7,778.38
  4. Step 4: Simplify right side
    9,542.58x = 102,478,989.74
  5. Step 5: Solve for x
    x = 102,478,989.74/9,542.58
  6. Step 6: Final answer
    x = 10,739.13

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Half scale
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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.