Home / 4,887.20-6,744.40-2,791.28

Finding the Fourth Proportional to 4,887.20, 6,744.40 and 2,791.28

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Solution

The fourth proportional to 4,887.20, 6,744.40 and 2,791.28 is: 3,852.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,887.20 : 6,744.40 = 2,791.28 : x
  2. Step 2: Convert to fraction form
    4,887.20/6,744.40 = 2,791.28/x
  3. Step 3: Cross multiply
    4,887.20x = 6,744.40 × 2,791.28
  4. Step 4: Simplify right side
    4,887.20x = 18,825,508.83
  5. Step 5: Solve for x
    x = 18,825,508.83/4,887.20
  6. Step 6: Final answer
    x = 3,852.00

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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.