Home / 1,553.07-2,143.23-854.43

Finding the Fourth Proportional to 1,553.07, 2,143.23 and 854.43

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Solution

The fourth proportional to 1,553.07, 2,143.23 and 854.43 is: 1,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.07 : 2,143.23 = 854.43 : x
  2. Step 2: Convert to fraction form
    1,553.07/2,143.23 = 854.43/x
  3. Step 3: Cross multiply
    1,553.07x = 2,143.23 × 854.43
  4. Step 4: Simplify right side
    1,553.07x = 1,831,240.01
  5. Step 5: Solve for x
    x = 1,831,240.01/1,553.07
  6. Step 6: Final answer
    x = 1,179.11

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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.