Home / 7,740.06-11,611.84-2,809.68

Finding the Fourth Proportional to 7,740.06, 11,611.84 and 2,809.68

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Solution

The fourth proportional to 7,740.06, 11,611.84 and 2,809.68 is: 4,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.06 : 11,611.84 = 2,809.68 : x
  2. Step 2: Convert to fraction form
    7,740.06/11,611.84 = 2,809.68/x
  3. Step 3: Cross multiply
    7,740.06x = 11,611.84 × 2,809.68
  4. Step 4: Simplify right side
    7,740.06x = 32,625,554.61
  5. Step 5: Solve for x
    x = 32,625,554.61/7,740.06
  6. Step 6: Final answer
    x = 4,215.16

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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.