Home / 7,722.13-11,583.20-1,878.70

Finding the Fourth Proportional to 7,722.13, 11,583.20 and 1,878.70

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Solution

The fourth proportional to 7,722.13, 11,583.20 and 1,878.70 is: 2,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,722.13 : 11,583.20 = 1,878.70 : x
  2. Step 2: Convert to fraction form
    7,722.13/11,583.20 = 1,878.70/x
  3. Step 3: Cross multiply
    7,722.13x = 11,583.20 × 1,878.70
  4. Step 4: Simplify right side
    7,722.13x = 21,761,357.84
  5. Step 5: Solve for x
    x = 21,761,357.84/7,722.13
  6. Step 6: Final answer
    x = 2,818.05

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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.