Home / 2,615.90-3,923.73-1,316.38

Finding the Fourth Proportional to 2,615.90, 3,923.73 and 1,316.38

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Solution

The fourth proportional to 2,615.90, 3,923.73 and 1,316.38 is: 1,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.90 : 3,923.73 = 1,316.38 : x
  2. Step 2: Convert to fraction form
    2,615.90/3,923.73 = 1,316.38/x
  3. Step 3: Cross multiply
    2,615.90x = 3,923.73 × 1,316.38
  4. Step 4: Simplify right side
    2,615.90x = 5,165,119.70
  5. Step 5: Solve for x
    x = 5,165,119.70/2,615.90
  6. Step 6: Final answer
    x = 1,974.51

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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.