Home / 2,985.45-4,480.15-1,999.36

Finding the Fourth Proportional to 2,985.45, 4,480.15 and 1,999.36

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Solution

The fourth proportional to 2,985.45, 4,480.15 and 1,999.36 is: 3,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.45 : 4,480.15 = 1,999.36 : x
  2. Step 2: Convert to fraction form
    2,985.45/4,480.15 = 1,999.36/x
  3. Step 3: Cross multiply
    2,985.45x = 4,480.15 × 1,999.36
  4. Step 4: Simplify right side
    2,985.45x = 8,957,432.70
  5. Step 5: Solve for x
    x = 8,957,432.70/2,985.45
  6. Step 6: Final answer
    x = 3,000.36

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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.