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Finding the Fourth Proportional to 5,739, 7,919.82 and 3,255

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Solution

The fourth proportional to 5,739, 7,919.82 and 3,255 is: 4,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,739 : 7,919.82 = 3,255 : x
  2. Step 2: Convert to fraction form
    5,739/7,919.82 = 3,255/x
  3. Step 3: Cross multiply
    5,739x = 7,919.82 × 3,255
  4. Step 4: Simplify right side
    5,739x = 25,779,014.10
  5. Step 5: Solve for x
    x = 25,779,014.10/5,739
  6. Step 6: Final answer
    x = 4,491.90

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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.