Home / 1,264.07-1,890.66-913.43

Finding the Fourth Proportional to 1,264.07, 1,890.66 and 913.43

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Solution

The fourth proportional to 1,264.07, 1,890.66 and 913.43 is: 1,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.07 : 1,890.66 = 913.43 : x
  2. Step 2: Convert to fraction form
    1,264.07/1,890.66 = 913.43/x
  3. Step 3: Cross multiply
    1,264.07x = 1,890.66 × 913.43
  4. Step 4: Simplify right side
    1,264.07x = 1,726,985.56
  5. Step 5: Solve for x
    x = 1,726,985.56/1,264.07
  6. Step 6: Final answer
    x = 1,366.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.