Home / 4,780.67-7,172.28-2,005.88

Finding the Fourth Proportional to 4,780.67, 7,172.28 and 2,005.88

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Solution

The fourth proportional to 4,780.67, 7,172.28 and 2,005.88 is: 3,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.67 : 7,172.28 = 2,005.88 : x
  2. Step 2: Convert to fraction form
    4,780.67/7,172.28 = 2,005.88/x
  3. Step 3: Cross multiply
    4,780.67x = 7,172.28 × 2,005.88
  4. Step 4: Simplify right side
    4,780.67x = 14,386,697.15
  5. Step 5: Solve for x
    x = 14,386,697.15/4,780.67
  6. Step 6: Final answer
    x = 3,009.35

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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.