Home / 9,349.62-12,902.25-5,157.78

Finding the Fourth Proportional to 9,349.62, 12,902.25 and 5,157.78

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Solution

The fourth proportional to 9,349.62, 12,902.25 and 5,157.78 is: 7,117.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.62 : 12,902.25 = 5,157.78 : x
  2. Step 2: Convert to fraction form
    9,349.62/12,902.25 = 5,157.78/x
  3. Step 3: Cross multiply
    9,349.62x = 12,902.25 × 5,157.78
  4. Step 4: Simplify right side
    9,349.62x = 66,546,967.01
  5. Step 5: Solve for x
    x = 66,546,967.01/9,349.62
  6. Step 6: Final answer
    x = 7,117.61

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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.