Home / 1,170.62-1,764.74-1,091.34

Finding the Fourth Proportional to 1,170.62, 1,764.74 and 1,091.34

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Solution

The fourth proportional to 1,170.62, 1,764.74 and 1,091.34 is: 1,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.62 : 1,764.74 = 1,091.34 : x
  2. Step 2: Convert to fraction form
    1,170.62/1,764.74 = 1,091.34/x
  3. Step 3: Cross multiply
    1,170.62x = 1,764.74 × 1,091.34
  4. Step 4: Simplify right side
    1,170.62x = 1,925,931.35
  5. Step 5: Solve for x
    x = 1,925,931.35/1,170.62
  6. Step 6: Final answer
    x = 1,645.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.