Home / 4,743.20-7,114.80-2,145.52

Finding the Fourth Proportional to 4,743.20, 7,114.80 and 2,145.52

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Solution

The fourth proportional to 4,743.20, 7,114.80 and 2,145.52 is: 3,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,743.20 : 7,114.80 = 2,145.52 : x
  2. Step 2: Convert to fraction form
    4,743.20/7,114.80 = 2,145.52/x
  3. Step 3: Cross multiply
    4,743.20x = 7,114.80 × 2,145.52
  4. Step 4: Simplify right side
    4,743.20x = 15,264,945.70
  5. Step 5: Solve for x
    x = 15,264,945.70/4,743.20
  6. Step 6: Final answer
    x = 3,218.28

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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.