Home / 1,110.14-1,531.94-637.70

Finding the Fourth Proportional to 1,110.14, 1,531.94 and 637.70

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Solution

The fourth proportional to 1,110.14, 1,531.94 and 637.70 is: 880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.14 : 1,531.94 = 637.70 : x
  2. Step 2: Convert to fraction form
    1,110.14/1,531.94 = 637.70/x
  3. Step 3: Cross multiply
    1,110.14x = 1,531.94 × 637.70
  4. Step 4: Simplify right side
    1,110.14x = 976,923.56
  5. Step 5: Solve for x
    x = 976,923.56/1,110.14
  6. Step 6: Final answer
    x = 880.00

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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.