Home / 9,272.48-12,785.84-7,143.38

Finding the Fourth Proportional to 9,272.48, 12,785.84 and 7,143.38

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Solution

The fourth proportional to 9,272.48, 12,785.84 and 7,143.38 is: 9,850.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.48 : 12,785.84 = 7,143.38 : x
  2. Step 2: Convert to fraction form
    9,272.48/12,785.84 = 7,143.38/x
  3. Step 3: Cross multiply
    9,272.48x = 12,785.84 × 7,143.38
  4. Step 4: Simplify right side
    9,272.48x = 91,334,113.74
  5. Step 5: Solve for x
    x = 91,334,113.74/9,272.48
  6. Step 6: Final answer
    x = 9,850.02

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Half scale
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Double 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.