Home / 5,107.79-7,660.31-1,409.13

Finding the Fourth Proportional to 5,107.79, 7,660.31 and 1,409.13

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Solution

The fourth proportional to 5,107.79, 7,660.31 and 1,409.13 is: 2,113.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.79 : 7,660.31 = 1,409.13 : x
  2. Step 2: Convert to fraction form
    5,107.79/7,660.31 = 1,409.13/x
  3. Step 3: Cross multiply
    5,107.79x = 7,660.31 × 1,409.13
  4. Step 4: Simplify right side
    5,107.79x = 10,794,365.58
  5. Step 5: Solve for x
    x = 10,794,365.58/5,107.79
  6. Step 6: Final answer
    x = 2,113.31

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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.