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Finding the Fourth Proportional to 6,639.56, 9,162.43 and 3,655.37

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Solution

The fourth proportional to 6,639.56, 9,162.43 and 3,655.37 is: 5,044.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.56 : 9,162.43 = 3,655.37 : x
  2. Step 2: Convert to fraction form
    6,639.56/9,162.43 = 3,655.37/x
  3. Step 3: Cross multiply
    6,639.56x = 9,162.43 × 3,655.37
  4. Step 4: Simplify right side
    6,639.56x = 33,492,071.75
  5. Step 5: Solve for x
    x = 33,492,071.75/6,639.56
  6. Step 6: Final answer
    x = 5,044.32

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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.