Home / 3,240.96-4,478.58-2,651.28

Finding the Fourth Proportional to 3,240.96, 4,478.58 and 2,651.28

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Solution

The fourth proportional to 3,240.96, 4,478.58 and 2,651.28 is: 3,663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.96 : 4,478.58 = 2,651.28 : x
  2. Step 2: Convert to fraction form
    3,240.96/4,478.58 = 2,651.28/x
  3. Step 3: Cross multiply
    3,240.96x = 4,478.58 × 2,651.28
  4. Step 4: Simplify right side
    3,240.96x = 11,873,969.58
  5. Step 5: Solve for x
    x = 11,873,969.58/3,240.96
  6. Step 6: Final answer
    x = 3,663.72

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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.