Home / 7,425.18-11,137.80-1,878.54

Finding the Fourth Proportional to 7,425.18, 11,137.80 and 1,878.54

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Solution

The fourth proportional to 7,425.18, 11,137.80 and 1,878.54 is: 2,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.18 : 11,137.80 = 1,878.54 : x
  2. Step 2: Convert to fraction form
    7,425.18/11,137.80 = 1,878.54/x
  3. Step 3: Cross multiply
    7,425.18x = 11,137.80 × 1,878.54
  4. Step 4: Simplify right side
    7,425.18x = 20,922,802.81
  5. Step 5: Solve for x
    x = 20,922,802.81/7,425.18
  6. Step 6: Final answer
    x = 2,817.82

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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.