Home / 2,125.56-3,184.98-1,639.80

Finding the Fourth Proportional to 2,125.56, 3,184.98 and 1,639.80

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Solution

The fourth proportional to 2,125.56, 3,184.98 and 1,639.80 is: 2,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.56 : 3,184.98 = 1,639.80 : x
  2. Step 2: Convert to fraction form
    2,125.56/3,184.98 = 1,639.80/x
  3. Step 3: Cross multiply
    2,125.56x = 3,184.98 × 1,639.80
  4. Step 4: Simplify right side
    2,125.56x = 5,222,730.20
  5. Step 5: Solve for x
    x = 5,222,730.20/2,125.56
  6. Step 6: Final answer
    x = 2,457.11

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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.