Home / 7,934.40-11,900.65-2,091.47

Finding the Fourth Proportional to 7,934.40, 11,900.65 and 2,091.47

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Solution

The fourth proportional to 7,934.40, 11,900.65 and 2,091.47 is: 3,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.40 : 11,900.65 = 2,091.47 : x
  2. Step 2: Convert to fraction form
    7,934.40/11,900.65 = 2,091.47/x
  3. Step 3: Cross multiply
    7,934.40x = 11,900.65 × 2,091.47
  4. Step 4: Simplify right side
    7,934.40x = 24,889,852.46
  5. Step 5: Solve for x
    x = 24,889,852.46/7,934.40
  6. Step 6: Final answer
    x = 3,136.95

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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.