Home / 7,923.40-11,881.91-2,990.36

Finding the Fourth Proportional to 7,923.40, 11,881.91 and 2,990.36

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Solution

The fourth proportional to 7,923.40, 11,881.91 and 2,990.36 is: 4,484.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.40 : 11,881.91 = 2,990.36 : x
  2. Step 2: Convert to fraction form
    7,923.40/11,881.91 = 2,990.36/x
  3. Step 3: Cross multiply
    7,923.40x = 11,881.91 × 2,990.36
  4. Step 4: Simplify right side
    7,923.40x = 35,531,128.98
  5. Step 5: Solve for x
    x = 35,531,128.98/7,923.40
  6. Step 6: Final answer
    x = 4,484.33

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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.