Home / 4,911.76-6,775.32-3,142.72

Finding the Fourth Proportional to 4,911.76, 6,775.32 and 3,142.72

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Solution

The fourth proportional to 4,911.76, 6,775.32 and 3,142.72 is: 4,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.76 : 6,775.32 = 3,142.72 : x
  2. Step 2: Convert to fraction form
    4,911.76/6,775.32 = 3,142.72/x
  3. Step 3: Cross multiply
    4,911.76x = 6,775.32 × 3,142.72
  4. Step 4: Simplify right side
    4,911.76x = 21,292,933.67
  5. Step 5: Solve for x
    x = 21,292,933.67/4,911.76
  6. Step 6: Final answer
    x = 4,335.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.