Home / 1,429.26-1,971.63-1,079.34

Finding the Fourth Proportional to 1,429.26, 1,971.63 and 1,079.34

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Solution

The fourth proportional to 1,429.26, 1,971.63 and 1,079.34 is: 1,488.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.26 : 1,971.63 = 1,079.34 : x
  2. Step 2: Convert to fraction form
    1,429.26/1,971.63 = 1,079.34/x
  3. Step 3: Cross multiply
    1,429.26x = 1,971.63 × 1,079.34
  4. Step 4: Simplify right side
    1,429.26x = 2,128,059.12
  5. Step 5: Solve for x
    x = 2,128,059.12/1,429.26
  6. Step 6: Final answer
    x = 1,488.92

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