Home / 1,079.08-1,619.40-531.42

Finding the Fourth Proportional to 1,079.08, 1,619.40 and 531.42

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Solution

The fourth proportional to 1,079.08, 1,619.40 and 531.42 is: 797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.08 : 1,619.40 = 531.42 : x
  2. Step 2: Convert to fraction form
    1,079.08/1,619.40 = 531.42/x
  3. Step 3: Cross multiply
    1,079.08x = 1,619.40 × 531.42
  4. Step 4: Simplify right side
    1,079.08x = 860,581.55
  5. Step 5: Solve for x
    x = 860,581.55/1,079.08
  6. Step 6: Final answer
    x = 797.51

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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.