Home / 3,120.60-4,680.96-1,040.61

Finding the Fourth Proportional to 3,120.60, 4,680.96 and 1,040.61

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Solution

The fourth proportional to 3,120.60, 4,680.96 and 1,040.61 is: 1,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.60 : 4,680.96 = 1,040.61 : x
  2. Step 2: Convert to fraction form
    3,120.60/4,680.96 = 1,040.61/x
  3. Step 3: Cross multiply
    3,120.60x = 4,680.96 × 1,040.61
  4. Step 4: Simplify right side
    3,120.60x = 4,871,053.79
  5. Step 5: Solve for x
    x = 4,871,053.79/3,120.60
  6. Step 6: Final answer
    x = 1,560.94

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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.