Home / 9,150.66-12,631.44-5,618.64

Finding the Fourth Proportional to 9,150.66, 12,631.44 and 5,618.64

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Solution

The fourth proportional to 9,150.66, 12,631.44 and 5,618.64 is: 7,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,150.66 : 12,631.44 = 5,618.64 : x
  2. Step 2: Convert to fraction form
    9,150.66/12,631.44 = 5,618.64/x
  3. Step 3: Cross multiply
    9,150.66x = 12,631.44 × 5,618.64
  4. Step 4: Simplify right side
    9,150.66x = 70,971,514.04
  5. Step 5: Solve for x
    x = 70,971,514.04/9,150.66
  6. Step 6: Final answer
    x = 7,755.89

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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.