Home / 1,351.36-1,861.68-1,113.76

Finding the Fourth Proportional to 1,351.36, 1,861.68 and 1,113.76

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Solution

The fourth proportional to 1,351.36, 1,861.68 and 1,113.76 is: 1,534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.36 : 1,861.68 = 1,113.76 : x
  2. Step 2: Convert to fraction form
    1,351.36/1,861.68 = 1,113.76/x
  3. Step 3: Cross multiply
    1,351.36x = 1,861.68 × 1,113.76
  4. Step 4: Simplify right side
    1,351.36x = 2,073,464.72
  5. Step 5: Solve for x
    x = 2,073,464.72/1,351.36
  6. Step 6: Final answer
    x = 1,534.35

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Why These Related Problems?

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