Home / 1,110.11-1,531.91-612.74

Finding the Fourth Proportional to 1,110.11, 1,531.91 and 612.74

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Solution

The fourth proportional to 1,110.11, 1,531.91 and 612.74 is: 845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.11 : 1,531.91 = 612.74 : x
  2. Step 2: Convert to fraction form
    1,110.11/1,531.91 = 612.74/x
  3. Step 3: Cross multiply
    1,110.11x = 1,531.91 × 612.74
  4. Step 4: Simplify right side
    1,110.11x = 938,667.90
  5. Step 5: Solve for x
    x = 938,667.90/1,110.11
  6. Step 6: Final answer
    x = 845.57

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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.