Home / 4,910.78-7,367.08-1,991.13

Finding the Fourth Proportional to 4,910.78, 7,367.08 and 1,991.13

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Solution

The fourth proportional to 4,910.78, 7,367.08 and 1,991.13 is: 2,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.78 : 7,367.08 = 1,991.13 : x
  2. Step 2: Convert to fraction form
    4,910.78/7,367.08 = 1,991.13/x
  3. Step 3: Cross multiply
    4,910.78x = 7,367.08 × 1,991.13
  4. Step 4: Simplify right side
    4,910.78x = 14,668,814.00
  5. Step 5: Solve for x
    x = 14,668,814.00/4,910.78
  6. Step 6: Final answer
    x = 2,987.06

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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.