Home / 9,358.20-12,916.80-5,379.75

Finding the Fourth Proportional to 9,358.20, 12,916.80 and 5,379.75

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Solution

The fourth proportional to 9,358.20, 12,916.80 and 5,379.75 is: 7,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.20 : 12,916.80 = 5,379.75 : x
  2. Step 2: Convert to fraction form
    9,358.20/12,916.80 = 5,379.75/x
  3. Step 3: Cross multiply
    9,358.20x = 12,916.80 × 5,379.75
  4. Step 4: Simplify right side
    9,358.20x = 69,489,154.80
  5. Step 5: Solve for x
    x = 69,489,154.80/9,358.20
  6. Step 6: Final answer
    x = 7,425.48

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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.