Home / 1,110.13-1,531.88-612.65

Finding the Fourth Proportional to 1,110.13, 1,531.88 and 612.65

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Solution

The fourth proportional to 1,110.13, 1,531.88 and 612.65 is: 845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.13 : 1,531.88 = 612.65 : x
  2. Step 2: Convert to fraction form
    1,110.13/1,531.88 = 612.65/x
  3. Step 3: Cross multiply
    1,110.13x = 1,531.88 × 612.65
  4. Step 4: Simplify right side
    1,110.13x = 938,500.15
  5. Step 5: Solve for x
    x = 938,500.15/1,110.13
  6. Step 6: Final answer
    x = 845.40

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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.