Home / 9,391.80-12,960.66-5,200.20

Finding the Fourth Proportional to 9,391.80, 12,960.66 and 5,200.20

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Solution

The fourth proportional to 9,391.80, 12,960.66 and 5,200.20 is: 7,176.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,391.80 : 12,960.66 = 5,200.20 : x
  2. Step 2: Convert to fraction form
    9,391.80/12,960.66 = 5,200.20/x
  3. Step 3: Cross multiply
    9,391.80x = 12,960.66 × 5,200.20
  4. Step 4: Simplify right side
    9,391.80x = 67,398,024.13
  5. Step 5: Solve for x
    x = 67,398,024.13/9,391.80
  6. Step 6: Final answer
    x = 7,176.26

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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.