Home / 1,427.49-2,141.37-503.15

Finding the Fourth Proportional to 1,427.49, 2,141.37 and 503.15

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Solution

The fourth proportional to 1,427.49, 2,141.37 and 503.15 is: 754.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.49 : 2,141.37 = 503.15 : x
  2. Step 2: Convert to fraction form
    1,427.49/2,141.37 = 503.15/x
  3. Step 3: Cross multiply
    1,427.49x = 2,141.37 × 503.15
  4. Step 4: Simplify right side
    1,427.49x = 1,077,419.61
  5. Step 5: Solve for x
    x = 1,077,419.61/1,427.49
  6. Step 6: Final answer
    x = 754.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.