Home / 4,749.20-7,128.16-2,560.08

Finding the Fourth Proportional to 4,749.20, 7,128.16 and 2,560.08

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Solution

The fourth proportional to 4,749.20, 7,128.16 and 2,560.08 is: 3,842.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,749.20 : 7,128.16 = 2,560.08 : x
  2. Step 2: Convert to fraction form
    4,749.20/7,128.16 = 2,560.08/x
  3. Step 3: Cross multiply
    4,749.20x = 7,128.16 × 2,560.08
  4. Step 4: Simplify right side
    4,749.20x = 18,248,659.85
  5. Step 5: Solve for x
    x = 18,248,659.85/4,749.20
  6. Step 6: Final answer
    x = 3,842.47

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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.