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Finding the Fourth Proportional to 2,519.71, 3,779.55 and 670.82

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Solution

The fourth proportional to 2,519.71, 3,779.55 and 670.82 is: 1,006.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.71 : 3,779.55 = 670.82 : x
  2. Step 2: Convert to fraction form
    2,519.71/3,779.55 = 670.82/x
  3. Step 3: Cross multiply
    2,519.71x = 3,779.55 × 670.82
  4. Step 4: Simplify right side
    2,519.71x = 2,535,378.83
  5. Step 5: Solve for x
    x = 2,535,378.83/2,519.71
  6. Step 6: Final answer
    x = 1,006.22

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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.