Home / 3,078.80-4,618.20-1,347.02

Finding the Fourth Proportional to 3,078.80, 4,618.20 and 1,347.02

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Solution

The fourth proportional to 3,078.80, 4,618.20 and 1,347.02 is: 2,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.80 : 4,618.20 = 1,347.02 : x
  2. Step 2: Convert to fraction form
    3,078.80/4,618.20 = 1,347.02/x
  3. Step 3: Cross multiply
    3,078.80x = 4,618.20 × 1,347.02
  4. Step 4: Simplify right side
    3,078.80x = 6,220,807.76
  5. Step 5: Solve for x
    x = 6,220,807.76/3,078.80
  6. Step 6: Final answer
    x = 2,020.53

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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.