Home / 9,339.44-12,888.43-5,147.69

Finding the Fourth Proportional to 9,339.44, 12,888.43 and 5,147.69

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Solution

The fourth proportional to 9,339.44, 12,888.43 and 5,147.69 is: 7,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.44 : 12,888.43 = 5,147.69 : x
  2. Step 2: Convert to fraction form
    9,339.44/12,888.43 = 5,147.69/x
  3. Step 3: Cross multiply
    9,339.44x = 12,888.43 × 5,147.69
  4. Step 4: Simplify right side
    9,339.44x = 66,345,642.23
  5. Step 5: Solve for x
    x = 66,345,642.23/9,339.44
  6. Step 6: Final answer
    x = 7,103.81

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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.