Home / 1,175.22-1,622.96-926.15

Finding the Fourth Proportional to 1,175.22, 1,622.96 and 926.15

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Solution

The fourth proportional to 1,175.22, 1,622.96 and 926.15 is: 1,278.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.22 : 1,622.96 = 926.15 : x
  2. Step 2: Convert to fraction form
    1,175.22/1,622.96 = 926.15/x
  3. Step 3: Cross multiply
    1,175.22x = 1,622.96 × 926.15
  4. Step 4: Simplify right side
    1,175.22x = 1,503,096.29
  5. Step 5: Solve for x
    x = 1,503,096.29/1,175.22
  6. Step 6: Final answer
    x = 1,278.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.