Home / 1,351.55-2,026.82-891.74

Finding the Fourth Proportional to 1,351.55, 2,026.82 and 891.74

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Solution

The fourth proportional to 1,351.55, 2,026.82 and 891.74 is: 1,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.55 : 2,026.82 = 891.74 : x
  2. Step 2: Convert to fraction form
    1,351.55/2,026.82 = 891.74/x
  3. Step 3: Cross multiply
    1,351.55x = 2,026.82 × 891.74
  4. Step 4: Simplify right side
    1,351.55x = 1,807,403.76
  5. Step 5: Solve for x
    x = 1,807,403.76/1,351.55
  6. Step 6: Final answer
    x = 1,337.28

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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.