Home / 1,818.48-2,727.90-520.14

Finding the Fourth Proportional to 1,818.48, 2,727.90 and 520.14

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Solution

The fourth proportional to 1,818.48, 2,727.90 and 520.14 is: 780.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.48 : 2,727.90 = 520.14 : x
  2. Step 2: Convert to fraction form
    1,818.48/2,727.90 = 520.14/x
  3. Step 3: Cross multiply
    1,818.48x = 2,727.90 × 520.14
  4. Step 4: Simplify right side
    1,818.48x = 1,418,889.91
  5. Step 5: Solve for x
    x = 1,418,889.91/1,818.48
  6. Step 6: Final answer
    x = 780.26

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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.