Home / 11,780.67-17,671.02-3,988.89

Finding the Fourth Proportional to 11,780.67, 17,671.02 and 3,988.89

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Solution

The fourth proportional to 11,780.67, 17,671.02 and 3,988.89 is: 5,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.67 : 17,671.02 = 3,988.89 : x
  2. Step 2: Convert to fraction form
    11,780.67/17,671.02 = 3,988.89/x
  3. Step 3: Cross multiply
    11,780.67x = 17,671.02 × 3,988.89
  4. Step 4: Simplify right side
    11,780.67x = 70,487,754.97
  5. Step 5: Solve for x
    x = 70,487,754.97/11,780.67
  6. Step 6: Final answer
    x = 5,983.34

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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.