Home / 1,818.30-2,727.45-519.77

Finding the Fourth Proportional to 1,818.30, 2,727.45 and 519.77

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Solution

The fourth proportional to 1,818.30, 2,727.45 and 519.77 is: 779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.30 : 2,727.45 = 519.77 : x
  2. Step 2: Convert to fraction form
    1,818.30/2,727.45 = 519.77/x
  3. Step 3: Cross multiply
    1,818.30x = 2,727.45 × 519.77
  4. Step 4: Simplify right side
    1,818.30x = 1,417,631.10
  5. Step 5: Solve for x
    x = 1,417,631.10/1,818.30
  6. Step 6: Final answer
    x = 779.65

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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.