Home / 1,081.16-1,491.93-609.07

Finding the Fourth Proportional to 1,081.16, 1,491.93 and 609.07

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Solution

The fourth proportional to 1,081.16, 1,491.93 and 609.07 is: 840.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.16 : 1,491.93 = 609.07 : x
  2. Step 2: Convert to fraction form
    1,081.16/1,491.93 = 609.07/x
  3. Step 3: Cross multiply
    1,081.16x = 1,491.93 × 609.07
  4. Step 4: Simplify right side
    1,081.16x = 908,691.67
  5. Step 5: Solve for x
    x = 908,691.67/1,081.16
  6. Step 6: Final answer
    x = 840.48

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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.