Home / 2,613.99-3,919.19-1,314.75

Finding the Fourth Proportional to 2,613.99, 3,919.19 and 1,314.75

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Solution

The fourth proportional to 2,613.99, 3,919.19 and 1,314.75 is: 1,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.99 : 3,919.19 = 1,314.75 : x
  2. Step 2: Convert to fraction form
    2,613.99/3,919.19 = 1,314.75/x
  3. Step 3: Cross multiply
    2,613.99x = 3,919.19 × 1,314.75
  4. Step 4: Simplify right side
    2,613.99x = 5,152,748.48
  5. Step 5: Solve for x
    x = 5,152,748.48/2,613.99
  6. Step 6: Final answer
    x = 1,971.22

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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.