Home / 6,639.12-9,956.64-3,125.62

Finding the Fourth Proportional to 6,639.12, 9,956.64 and 3,125.62

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Solution

The fourth proportional to 6,639.12, 9,956.64 and 3,125.62 is: 4,687.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.12 : 9,956.64 = 3,125.62 : x
  2. Step 2: Convert to fraction form
    6,639.12/9,956.64 = 3,125.62/x
  3. Step 3: Cross multiply
    6,639.12x = 9,956.64 × 3,125.62
  4. Step 4: Simplify right side
    6,639.12x = 31,120,673.12
  5. Step 5: Solve for x
    x = 31,120,673.12/6,639.12
  6. Step 6: Final answer
    x = 4,687.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.