Home / 3,386.40-5,077.92-1,077.60

Finding the Fourth Proportional to 3,386.40, 5,077.92 and 1,077.60

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Solution

The fourth proportional to 3,386.40, 5,077.92 and 1,077.60 is: 1,615.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.40 : 5,077.92 = 1,077.60 : x
  2. Step 2: Convert to fraction form
    3,386.40/5,077.92 = 1,077.60/x
  3. Step 3: Cross multiply
    3,386.40x = 5,077.92 × 1,077.60
  4. Step 4: Simplify right side
    3,386.40x = 5,471,966.59
  5. Step 5: Solve for x
    x = 5,471,966.59/3,386.40
  6. Step 6: Final answer
    x = 1,615.87

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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.