Home / 9,290.24-12,819.84-5,311.20

Finding the Fourth Proportional to 9,290.24, 12,819.84 and 5,311.20

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Solution

The fourth proportional to 9,290.24, 12,819.84 and 5,311.20 is: 7,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,290.24 : 12,819.84 = 5,311.20 : x
  2. Step 2: Convert to fraction form
    9,290.24/12,819.84 = 5,311.20/x
  3. Step 3: Cross multiply
    9,290.24x = 12,819.84 × 5,311.20
  4. Step 4: Simplify right side
    9,290.24x = 68,088,734.21
  5. Step 5: Solve for x
    x = 68,088,734.21/9,290.24
  6. Step 6: Final answer
    x = 7,329.06

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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.