Home / 1,351.28-2,026.80-1,118

Finding the Fourth Proportional to 1,351.28, 2,026.80 and 1,118

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Solution

The fourth proportional to 1,351.28, 2,026.80 and 1,118 is: 1,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.28 : 2,026.80 = 1,118 : x
  2. Step 2: Convert to fraction form
    1,351.28/2,026.80 = 1,118/x
  3. Step 3: Cross multiply
    1,351.28x = 2,026.80 × 1,118
  4. Step 4: Simplify right side
    1,351.28x = 2,265,962.40
  5. Step 5: Solve for x
    x = 2,265,962.40/1,351.28
  6. Step 6: Final answer
    x = 1,676.90

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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.