Home / 2,820.66-4,228.56-1,520.64

Finding the Fourth Proportional to 2,820.66, 4,228.56 and 1,520.64

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Solution

The fourth proportional to 2,820.66, 4,228.56 and 1,520.64 is: 2,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.66 : 4,228.56 = 1,520.64 : x
  2. Step 2: Convert to fraction form
    2,820.66/4,228.56 = 1,520.64/x
  3. Step 3: Cross multiply
    2,820.66x = 4,228.56 × 1,520.64
  4. Step 4: Simplify right side
    2,820.66x = 6,430,117.48
  5. Step 5: Solve for x
    x = 6,430,117.48/2,820.66
  6. Step 6: Final answer
    x = 2,279.65

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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.