Home / 1,081.21-1,492.01-609.13

Finding the Fourth Proportional to 1,081.21, 1,492.01 and 609.13

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Solution

The fourth proportional to 1,081.21, 1,492.01 and 609.13 is: 840.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.21 : 1,492.01 = 609.13 : x
  2. Step 2: Convert to fraction form
    1,081.21/1,492.01 = 609.13/x
  3. Step 3: Cross multiply
    1,081.21x = 1,492.01 × 609.13
  4. Step 4: Simplify right side
    1,081.21x = 908,817.55
  5. Step 5: Solve for x
    x = 908,817.55/1,081.21
  6. Step 6: Final answer
    x = 840.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.