Home / 1,661.08-2,492.54-1,399.86

Finding the Fourth Proportional to 1,661.08, 2,492.54 and 1,399.86

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Solution

The fourth proportional to 1,661.08, 2,492.54 and 1,399.86 is: 2,100.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.08 : 2,492.54 = 1,399.86 : x
  2. Step 2: Convert to fraction form
    1,661.08/2,492.54 = 1,399.86/x
  3. Step 3: Cross multiply
    1,661.08x = 2,492.54 × 1,399.86
  4. Step 4: Simplify right side
    1,661.08x = 3,489,207.04
  5. Step 5: Solve for x
    x = 3,489,207.04/1,661.08
  6. Step 6: Final answer
    x = 2,100.57

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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.