Home / 1,427.10-2,142.68-880.35

Finding the Fourth Proportional to 1,427.10, 2,142.68 and 880.35

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Solution

The fourth proportional to 1,427.10, 2,142.68 and 880.35 is: 1,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.10 : 2,142.68 = 880.35 : x
  2. Step 2: Convert to fraction form
    1,427.10/2,142.68 = 880.35/x
  3. Step 3: Cross multiply
    1,427.10x = 2,142.68 × 880.35
  4. Step 4: Simplify right side
    1,427.10x = 1,886,303.94
  5. Step 5: Solve for x
    x = 1,886,303.94/1,427.10
  6. Step 6: Final answer
    x = 1,321.77

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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.