Home / 2,920.02-4,379.82-1,188.60

Finding the Fourth Proportional to 2,920.02, 4,379.82 and 1,188.60

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Solution

The fourth proportional to 2,920.02, 4,379.82 and 1,188.60 is: 1,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.02 : 4,379.82 = 1,188.60 : x
  2. Step 2: Convert to fraction form
    2,920.02/4,379.82 = 1,188.60/x
  3. Step 3: Cross multiply
    2,920.02x = 4,379.82 × 1,188.60
  4. Step 4: Simplify right side
    2,920.02x = 5,205,854.05
  5. Step 5: Solve for x
    x = 5,205,854.05/2,920.02
  6. Step 6: Final answer
    x = 1,782.81

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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.