Home / 7,175.18-10,763.39-1,981.06

Finding the Fourth Proportional to 7,175.18, 10,763.39 and 1,981.06

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Solution

The fourth proportional to 7,175.18, 10,763.39 and 1,981.06 is: 2,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.18 : 10,763.39 = 1,981.06 : x
  2. Step 2: Convert to fraction form
    7,175.18/10,763.39 = 1,981.06/x
  3. Step 3: Cross multiply
    7,175.18x = 10,763.39 × 1,981.06
  4. Step 4: Simplify right side
    7,175.18x = 21,322,899.44
  5. Step 5: Solve for x
    x = 21,322,899.44/7,175.18
  6. Step 6: Final answer
    x = 2,971.76

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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.