Home / 7,909.58-11,865.59-2,642.96

Finding the Fourth Proportional to 7,909.58, 11,865.59 and 2,642.96

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Solution

The fourth proportional to 7,909.58, 11,865.59 and 2,642.96 is: 3,964.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.58 : 11,865.59 = 2,642.96 : x
  2. Step 2: Convert to fraction form
    7,909.58/11,865.59 = 2,642.96/x
  3. Step 3: Cross multiply
    7,909.58x = 11,865.59 × 2,642.96
  4. Step 4: Simplify right side
    7,909.58x = 31,360,306.11
  5. Step 5: Solve for x
    x = 31,360,306.11/7,909.58
  6. Step 6: Final answer
    x = 3,964.85

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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.