Home / 6,439.80-9,653.12-3,660.60

Finding the Fourth Proportional to 6,439.80, 9,653.12 and 3,660.60

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Solution

The fourth proportional to 6,439.80, 9,653.12 and 3,660.60 is: 5,487.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.80 : 9,653.12 = 3,660.60 : x
  2. Step 2: Convert to fraction form
    6,439.80/9,653.12 = 3,660.60/x
  3. Step 3: Cross multiply
    6,439.80x = 9,653.12 × 3,660.60
  4. Step 4: Simplify right side
    6,439.80x = 35,336,211.07
  5. Step 5: Solve for x
    x = 35,336,211.07/6,439.80
  6. Step 6: Final answer
    x = 5,487.16

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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.