Home / 6,639.20-9,162.36-3,655.28

Finding the Fourth Proportional to 6,639.20, 9,162.36 and 3,655.28

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Solution

The fourth proportional to 6,639.20, 9,162.36 and 3,655.28 is: 5,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.20 : 9,162.36 = 3,655.28 : x
  2. Step 2: Convert to fraction form
    6,639.20/9,162.36 = 3,655.28/x
  3. Step 3: Cross multiply
    6,639.20x = 9,162.36 × 3,655.28
  4. Step 4: Simplify right side
    6,639.20x = 33,490,991.26
  5. Step 5: Solve for x
    x = 33,490,991.26/6,639.20
  6. Step 6: Final answer
    x = 5,044.43

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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.