Home / 7,729.12-11,593.80-1,885.84

Finding the Fourth Proportional to 7,729.12, 11,593.80 and 1,885.84

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Solution

The fourth proportional to 7,729.12, 11,593.80 and 1,885.84 is: 2,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.12 : 11,593.80 = 1,885.84 : x
  2. Step 2: Convert to fraction form
    7,729.12/11,593.80 = 1,885.84/x
  3. Step 3: Cross multiply
    7,729.12x = 11,593.80 × 1,885.84
  4. Step 4: Simplify right side
    7,729.12x = 21,864,051.79
  5. Step 5: Solve for x
    x = 21,864,051.79/7,729.12
  6. Step 6: Final answer
    x = 2,828.79

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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.