Home / 6,920.80-10,383.01-2,478.31

Finding the Fourth Proportional to 6,920.80, 10,383.01 and 2,478.31

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Solution

The fourth proportional to 6,920.80, 10,383.01 and 2,478.31 is: 3,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.80 : 10,383.01 = 2,478.31 : x
  2. Step 2: Convert to fraction form
    6,920.80/10,383.01 = 2,478.31/x
  3. Step 3: Cross multiply
    6,920.80x = 10,383.01 × 2,478.31
  4. Step 4: Simplify right side
    6,920.80x = 25,732,285.36
  5. Step 5: Solve for x
    x = 25,732,285.36/6,920.80
  6. Step 6: Final answer
    x = 3,718.11

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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.