Home / 1,214.27-1,821.19-348.38

Finding the Fourth Proportional to 1,214.27, 1,821.19 and 348.38

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Solution

The fourth proportional to 1,214.27, 1,821.19 and 348.38 is: 522.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.27 : 1,821.19 = 348.38 : x
  2. Step 2: Convert to fraction form
    1,214.27/1,821.19 = 348.38/x
  3. Step 3: Cross multiply
    1,214.27x = 1,821.19 × 348.38
  4. Step 4: Simplify right side
    1,214.27x = 634,466.17
  5. Step 5: Solve for x
    x = 634,466.17/1,214.27
  6. Step 6: Final answer
    x = 522.51

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1.5x scale

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.