Home / 1,168.22-1,619.82-1,129.19

Finding the Fourth Proportional to 1,168.22, 1,619.82 and 1,129.19

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Solution

The fourth proportional to 1,168.22, 1,619.82 and 1,129.19 is: 1,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.22 : 1,619.82 = 1,129.19 : x
  2. Step 2: Convert to fraction form
    1,168.22/1,619.82 = 1,129.19/x
  3. Step 3: Cross multiply
    1,168.22x = 1,619.82 × 1,129.19
  4. Step 4: Simplify right side
    1,168.22x = 1,829,088.73
  5. Step 5: Solve for x
    x = 1,829,088.73/1,168.22
  6. Step 6: Final answer
    x = 1,565.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.