Home / 1,360.55-2,040.86-386.66

Finding the Fourth Proportional to 1,360.55, 2,040.86 and 386.66

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Solution

The fourth proportional to 1,360.55, 2,040.86 and 386.66 is: 580.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.55 : 2,040.86 = 386.66 : x
  2. Step 2: Convert to fraction form
    1,360.55/2,040.86 = 386.66/x
  3. Step 3: Cross multiply
    1,360.55x = 2,040.86 × 386.66
  4. Step 4: Simplify right side
    1,360.55x = 789,125.00
  5. Step 5: Solve for x
    x = 789,125.00/1,360.55
  6. Step 6: Final answer
    x = 580.00

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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.