Home / 6,439.79-9,659.48-2,057.15

Finding the Fourth Proportional to 6,439.79, 9,659.48 and 2,057.15

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Solution

The fourth proportional to 6,439.79, 9,659.48 and 2,057.15 is: 3,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.79 : 9,659.48 = 2,057.15 : x
  2. Step 2: Convert to fraction form
    6,439.79/9,659.48 = 2,057.15/x
  3. Step 3: Cross multiply
    6,439.79x = 9,659.48 × 2,057.15
  4. Step 4: Simplify right side
    6,439.79x = 19,870,940.70
  5. Step 5: Solve for x
    x = 19,870,940.70/6,439.79
  6. Step 6: Final answer
    x = 3,085.65

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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.