Home / 2,613.90-3,919.29-1,054.62

Finding the Fourth Proportional to 2,613.90, 3,919.29 and 1,054.62

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Solution

The fourth proportional to 2,613.90, 3,919.29 and 1,054.62 is: 1,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.90 : 3,919.29 = 1,054.62 : x
  2. Step 2: Convert to fraction form
    2,613.90/3,919.29 = 1,054.62/x
  3. Step 3: Cross multiply
    2,613.90x = 3,919.29 × 1,054.62
  4. Step 4: Simplify right side
    2,613.90x = 4,133,361.62
  5. Step 5: Solve for x
    x = 4,133,361.62/2,613.90
  6. Step 6: Final answer
    x = 1,581.30

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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.