Home / 1,855.23-2,781.60-1,113.17

Finding the Fourth Proportional to 1,855.23, 2,781.60 and 1,113.17

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Solution

The fourth proportional to 1,855.23, 2,781.60 and 1,113.17 is: 1,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.23 : 2,781.60 = 1,113.17 : x
  2. Step 2: Convert to fraction form
    1,855.23/2,781.60 = 1,113.17/x
  3. Step 3: Cross multiply
    1,855.23x = 2,781.60 × 1,113.17
  4. Step 4: Simplify right side
    1,855.23x = 3,096,382.55
  5. Step 5: Solve for x
    x = 3,096,382.55/1,855.23
  6. Step 6: Final answer
    x = 1,669.01

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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.