Home / 2,124.53-3,186.77-1,539.81

Finding the Fourth Proportional to 2,124.53, 3,186.77 and 1,539.81

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Solution

The fourth proportional to 2,124.53, 3,186.77 and 1,539.81 is: 2,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.53 : 3,186.77 = 1,539.81 : x
  2. Step 2: Convert to fraction form
    2,124.53/3,186.77 = 1,539.81/x
  3. Step 3: Cross multiply
    2,124.53x = 3,186.77 × 1,539.81
  4. Step 4: Simplify right side
    2,124.53x = 4,907,016.95
  5. Step 5: Solve for x
    x = 4,907,016.95/2,124.53
  6. Step 6: Final answer
    x = 2,309.70

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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.