Home / 1,429.48-2,144.37-1,120.77

Finding the Fourth Proportional to 1,429.48, 2,144.37 and 1,120.77

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Solution

The fourth proportional to 1,429.48, 2,144.37 and 1,120.77 is: 1,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.48 : 2,144.37 = 1,120.77 : x
  2. Step 2: Convert to fraction form
    1,429.48/2,144.37 = 1,120.77/x
  3. Step 3: Cross multiply
    1,429.48x = 2,144.37 × 1,120.77
  4. Step 4: Simplify right side
    1,429.48x = 2,403,349.77
  5. Step 5: Solve for x
    x = 2,403,349.77/1,429.48
  6. Step 6: Final answer
    x = 1,681.27

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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.