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Finding the Fourth Proportional to 9,060.75, 12,503.86 and 5,286.51

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Solution

The fourth proportional to 9,060.75, 12,503.86 and 5,286.51 is: 7,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,060.75 : 12,503.86 = 5,286.51 : x
  2. Step 2: Convert to fraction form
    9,060.75/12,503.86 = 5,286.51/x
  3. Step 3: Cross multiply
    9,060.75x = 12,503.86 × 5,286.51
  4. Step 4: Simplify right side
    9,060.75x = 66,101,780.93
  5. Step 5: Solve for x
    x = 66,101,780.93/9,060.75
  6. Step 6: Final answer
    x = 7,295.40

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Half scale
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Double scale
Find fourth proportional to 9,061.75, 12,505.24 and 5,287.51
Similar ratio
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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.