Home / 1,212.38-1,818.59-346.71

Finding the Fourth Proportional to 1,212.38, 1,818.59 and 346.71

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Solution

The fourth proportional to 1,212.38, 1,818.59 and 346.71 is: 520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.38 : 1,818.59 = 346.71 : x
  2. Step 2: Convert to fraction form
    1,212.38/1,818.59 = 346.71/x
  3. Step 3: Cross multiply
    1,212.38x = 1,818.59 × 346.71
  4. Step 4: Simplify right side
    1,212.38x = 630,521.61
  5. Step 5: Solve for x
    x = 630,521.61/1,212.38
  6. Step 6: Final answer
    x = 520.07

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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.