Home / 1,318.06-1,820.64-1,119.61

Finding the Fourth Proportional to 1,318.06, 1,820.64 and 1,119.61

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Solution

The fourth proportional to 1,318.06, 1,820.64 and 1,119.61 is: 1,546.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.06 : 1,820.64 = 1,119.61 : x
  2. Step 2: Convert to fraction form
    1,318.06/1,820.64 = 1,119.61/x
  3. Step 3: Cross multiply
    1,318.06x = 1,820.64 × 1,119.61
  4. Step 4: Simplify right side
    1,318.06x = 2,038,406.75
  5. Step 5: Solve for x
    x = 2,038,406.75/1,318.06
  6. Step 6: Final answer
    x = 1,546.52

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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.