Home / 1,544.40-2,131.11-881.28

Finding the Fourth Proportional to 1,544.40, 2,131.11 and 881.28

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Solution

The fourth proportional to 1,544.40, 2,131.11 and 881.28 is: 1,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.40 : 2,131.11 = 881.28 : x
  2. Step 2: Convert to fraction form
    1,544.40/2,131.11 = 881.28/x
  3. Step 3: Cross multiply
    1,544.40x = 2,131.11 × 881.28
  4. Step 4: Simplify right side
    1,544.40x = 1,878,104.62
  5. Step 5: Solve for x
    x = 1,878,104.62/1,544.40
  6. Step 6: Final answer
    x = 1,216.07

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1.5x scale

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.