Home / 9,370.72-12,931.68-5,179.20

Finding the Fourth Proportional to 9,370.72, 12,931.68 and 5,179.20

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Solution

The fourth proportional to 9,370.72, 12,931.68 and 5,179.20 is: 7,147.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.72 : 12,931.68 = 5,179.20 : x
  2. Step 2: Convert to fraction form
    9,370.72/12,931.68 = 5,179.20/x
  3. Step 3: Cross multiply
    9,370.72x = 12,931.68 × 5,179.20
  4. Step 4: Simplify right side
    9,370.72x = 66,975,757.06
  5. Step 5: Solve for x
    x = 66,975,757.06/9,370.72
  6. Step 6: Final answer
    x = 7,147.34

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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.