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Finding the Fourth Proportional to 3,159.07, 4,358.92 and 1,815.14

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Solution

The fourth proportional to 3,159.07, 4,358.92 and 1,815.14 is: 2,504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.07 : 4,358.92 = 1,815.14 : x
  2. Step 2: Convert to fraction form
    3,159.07/4,358.92 = 1,815.14/x
  3. Step 3: Cross multiply
    3,159.07x = 4,358.92 × 1,815.14
  4. Step 4: Simplify right side
    3,159.07x = 7,912,040.97
  5. Step 5: Solve for x
    x = 7,912,040.97/3,159.07
  6. Step 6: Final answer
    x = 2,504.55

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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.