Home / 7,828.75-10,809.35-5,039.11

Finding the Fourth Proportional to 7,828.75, 10,809.35 and 5,039.11

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Solution

The fourth proportional to 7,828.75, 10,809.35 and 5,039.11 is: 6,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.75 : 10,809.35 = 5,039.11 : x
  2. Step 2: Convert to fraction form
    7,828.75/10,809.35 = 5,039.11/x
  3. Step 3: Cross multiply
    7,828.75x = 10,809.35 × 5,039.11
  4. Step 4: Simplify right side
    7,828.75x = 54,469,503.68
  5. Step 5: Solve for x
    x = 54,469,503.68/7,828.75
  6. Step 6: Final answer
    x = 6,957.62

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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.