Home / 9,319.91-12,857.23-5,540.92

Finding the Fourth Proportional to 9,319.91, 12,857.23 and 5,540.92

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Solution

The fourth proportional to 9,319.91, 12,857.23 and 5,540.92 is: 7,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.91 : 12,857.23 = 5,540.92 : x
  2. Step 2: Convert to fraction form
    9,319.91/12,857.23 = 5,540.92/x
  3. Step 3: Cross multiply
    9,319.91x = 12,857.23 × 5,540.92
  4. Step 4: Simplify right side
    9,319.91x = 71,240,929.96
  5. Step 5: Solve for x
    x = 71,240,929.96/9,319.91
  6. Step 6: Final answer
    x = 7,643.95

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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.