Home / 4,979.70-7,459.74-2,781.72

Finding the Fourth Proportional to 4,979.70, 7,459.74 and 2,781.72

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Solution

The fourth proportional to 4,979.70, 7,459.74 and 2,781.72 is: 4,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.70 : 7,459.74 = 2,781.72 : x
  2. Step 2: Convert to fraction form
    4,979.70/7,459.74 = 2,781.72/x
  3. Step 3: Cross multiply
    4,979.70x = 7,459.74 × 2,781.72
  4. Step 4: Simplify right side
    4,979.70x = 20,750,907.95
  5. Step 5: Solve for x
    x = 20,750,907.95/4,979.70
  6. Step 6: Final answer
    x = 4,167.10

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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.