Home / 1,544.30-2,131.14-881.15

Finding the Fourth Proportional to 1,544.30, 2,131.14 and 881.15

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Solution

The fourth proportional to 1,544.30, 2,131.14 and 881.15 is: 1,215.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.30 : 2,131.14 = 881.15 : x
  2. Step 2: Convert to fraction form
    1,544.30/2,131.14 = 881.15/x
  3. Step 3: Cross multiply
    1,544.30x = 2,131.14 × 881.15
  4. Step 4: Simplify right side
    1,544.30x = 1,877,846.66
  5. Step 5: Solve for x
    x = 1,877,846.66/1,544.30
  6. Step 6: Final answer
    x = 1,215.99

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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.