Home / 3,455.20-5,182.80-1,146.70

Finding the Fourth Proportional to 3,455.20, 5,182.80 and 1,146.70

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Solution

The fourth proportional to 3,455.20, 5,182.80 and 1,146.70 is: 1,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.20 : 5,182.80 = 1,146.70 : x
  2. Step 2: Convert to fraction form
    3,455.20/5,182.80 = 1,146.70/x
  3. Step 3: Cross multiply
    3,455.20x = 5,182.80 × 1,146.70
  4. Step 4: Simplify right side
    3,455.20x = 5,943,116.76
  5. Step 5: Solve for x
    x = 5,943,116.76/3,455.20
  6. Step 6: Final answer
    x = 1,720.05

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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.