Home / 1,544.15-2,131.61-985.35

Finding the Fourth Proportional to 1,544.15, 2,131.61 and 985.35

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Solution

The fourth proportional to 1,544.15, 2,131.61 and 985.35 is: 1,360.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.15 : 2,131.61 = 985.35 : x
  2. Step 2: Convert to fraction form
    1,544.15/2,131.61 = 985.35/x
  3. Step 3: Cross multiply
    1,544.15x = 2,131.61 × 985.35
  4. Step 4: Simplify right side
    1,544.15x = 2,100,381.91
  5. Step 5: Solve for x
    x = 2,100,381.91/1,544.15
  6. Step 6: Final answer
    x = 1,360.22

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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.