Home / 1,418.37-2,124.80-800.18

Finding the Fourth Proportional to 1,418.37, 2,124.80 and 800.18

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Solution

The fourth proportional to 1,418.37, 2,124.80 and 800.18 is: 1,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.37 : 2,124.80 = 800.18 : x
  2. Step 2: Convert to fraction form
    1,418.37/2,124.80 = 800.18/x
  3. Step 3: Cross multiply
    1,418.37x = 2,124.80 × 800.18
  4. Step 4: Simplify right side
    1,418.37x = 1,700,222.46
  5. Step 5: Solve for x
    x = 1,700,222.46/1,418.37
  6. Step 6: Final answer
    x = 1,198.72

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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.