Home / 9,357.26-12,913.28-5,165.78

Finding the Fourth Proportional to 9,357.26, 12,913.28 and 5,165.78

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Solution

The fourth proportional to 9,357.26, 12,913.28 and 5,165.78 is: 7,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.26 : 12,913.28 = 5,165.78 : x
  2. Step 2: Convert to fraction form
    9,357.26/12,913.28 = 5,165.78/x
  3. Step 3: Cross multiply
    9,357.26x = 12,913.28 × 5,165.78
  4. Step 4: Simplify right side
    9,357.26x = 66,707,163.56
  5. Step 5: Solve for x
    x = 66,707,163.56/9,357.26
  6. Step 6: Final answer
    x = 7,128.92

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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.