Home / 1,553.03-2,141.40-1,272.38

Finding the Fourth Proportional to 1,553.03, 2,141.40 and 1,272.38

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Solution

The fourth proportional to 1,553.03, 2,141.40 and 1,272.38 is: 1,754.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.03 : 2,141.40 = 1,272.38 : x
  2. Step 2: Convert to fraction form
    1,553.03/2,141.40 = 1,272.38/x
  3. Step 3: Cross multiply
    1,553.03x = 2,141.40 × 1,272.38
  4. Step 4: Simplify right side
    1,553.03x = 2,724,674.53
  5. Step 5: Solve for x
    x = 2,724,674.53/1,553.03
  6. Step 6: Final answer
    x = 1,754.42

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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.