Home / 7,175.36-10,761.14-1,980.02

Finding the Fourth Proportional to 7,175.36, 10,761.14 and 1,980.02

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Solution

The fourth proportional to 7,175.36, 10,761.14 and 1,980.02 is: 2,969.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.36 : 10,761.14 = 1,980.02 : x
  2. Step 2: Convert to fraction form
    7,175.36/10,761.14 = 1,980.02/x
  3. Step 3: Cross multiply
    7,175.36x = 10,761.14 × 1,980.02
  4. Step 4: Simplify right side
    7,175.36x = 21,307,272.42
  5. Step 5: Solve for x
    x = 21,307,272.42/7,175.36
  6. Step 6: Final answer
    x = 2,969.51

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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.