Home / 2,685.60-4,018.05-1,645.38

Finding the Fourth Proportional to 2,685.60, 4,018.05 and 1,645.38

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Solution

The fourth proportional to 2,685.60, 4,018.05 and 1,645.38 is: 2,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.60 : 4,018.05 = 1,645.38 : x
  2. Step 2: Convert to fraction form
    2,685.60/4,018.05 = 1,645.38/x
  3. Step 3: Cross multiply
    2,685.60x = 4,018.05 × 1,645.38
  4. Step 4: Simplify right side
    2,685.60x = 6,611,219.11
  5. Step 5: Solve for x
    x = 6,611,219.11/2,685.60
  6. Step 6: Final answer
    x = 2,461.73

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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.