Home / 7,820.12-11,730.18-3,206.36

Finding the Fourth Proportional to 7,820.12, 11,730.18 and 3,206.36

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Solution

The fourth proportional to 7,820.12, 11,730.18 and 3,206.36 is: 4,809.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.12 : 11,730.18 = 3,206.36 : x
  2. Step 2: Convert to fraction form
    7,820.12/11,730.18 = 3,206.36/x
  3. Step 3: Cross multiply
    7,820.12x = 11,730.18 × 3,206.36
  4. Step 4: Simplify right side
    7,820.12x = 37,611,121.29
  5. Step 5: Solve for x
    x = 37,611,121.29/7,820.12
  6. Step 6: Final answer
    x = 4,809.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.