Home / 1,426.32-2,127.96-1,218.48

Finding the Fourth Proportional to 1,426.32, 2,127.96 and 1,218.48

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Solution

The fourth proportional to 1,426.32, 2,127.96 and 1,218.48 is: 1,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.32 : 2,127.96 = 1,218.48 : x
  2. Step 2: Convert to fraction form
    1,426.32/2,127.96 = 1,218.48/x
  3. Step 3: Cross multiply
    1,426.32x = 2,127.96 × 1,218.48
  4. Step 4: Simplify right side
    1,426.32x = 2,592,876.70
  5. Step 5: Solve for x
    x = 2,592,876.70/1,426.32
  6. Step 6: Final answer
    x = 1,817.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.