Home / 1,120.32-1,669.21-1,057.44

Finding the Fourth Proportional to 1,120.32, 1,669.21 and 1,057.44

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Solution

The fourth proportional to 1,120.32, 1,669.21 and 1,057.44 is: 1,575.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.32 : 1,669.21 = 1,057.44 : x
  2. Step 2: Convert to fraction form
    1,120.32/1,669.21 = 1,057.44/x
  3. Step 3: Cross multiply
    1,120.32x = 1,669.21 × 1,057.44
  4. Step 4: Simplify right side
    1,120.32x = 1,765,089.42
  5. Step 5: Solve for x
    x = 1,765,089.42/1,120.32
  6. Step 6: Final answer
    x = 1,575.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.